Istanbul Old City Walking Tour: Hagia Sophia, Blue Mosque & Topkapi Palace

Last Updated: 17 May 2026

Istanbul is the city I keep promising myself I will fully understand, and then on every visit it teaches me how little I really know. The historic peninsula, Sultanahmet, sits on the same triangle of land where the Byzantines made their capital in 330 AD and the Ottomans made theirs in 1453, and the layers of two great empires are pressed together in a single walking tour. You can stand under the dome of Hagia Sophia, walk fifteen minutes through the Hippodrome, enter Topkapi Palace, and have crossed 1,500 years of imperial decision-making in a single morning. No other city in the world offers this concentration of significance in such a small area.

In this guide I will take you through the Old City walk I do with friends visiting for the first time, focusing on Hagia Sophia, the Blue Mosque, Topkapi Palace, the Basilica Cistern, the Grand Bazaar and the smaller corners that most rushed tours skip. I will share how I pace the day to avoid the worst crowds, what to wear for mosque visits, and the practical details that will make a long walking day enjoyable rather than exhausting.

Hagia Sophia, Where Byzantine and Ottoman Worlds Meet

The first time I walked into Hagia Sophia I had to stand still for several minutes before I could take a step further. The scale, the dome floating impossibly above the central space, the golden light filtering through windows that have been letting sun in for nearly 1,500 years, all of it overwhelms anyone who is paying attention. Even Justinian I, the emperor who built it, is said to have stood inside on the day of consecration in 537 AD and exclaimed “Solomon, I have surpassed you,” referring to the Temple of Solomon in Jerusalem.

The Building’s Three Lives

Hagia Sophia, the Church of Holy Wisdom, was built between 532 and 537 AD on the orders of Emperor Justinian after riots destroyed the previous church on the same site. The architects, Anthemius of Tralles and Isidore of Miletus, were not traditional builders but mathematicians and physicists, which is why the building has the audacious geometry of an academic experiment rather than a conservative copy of earlier basilicas. The central dome, 31 meters wide and 56 meters above the floor, was the largest in the world for nearly a thousand years.

For 916 years Hagia Sophia served as the cathedral of Constantinople and the seat of the Orthodox Patriarch. It survived earthquakes, riots, fires and even the 1204 sack of Constantinople by the Fourth Crusade, when Western Christians looted the building and shipped many of its treasures to Venice. The four bronze horses that now stand on the facade of Saint Mark’s Basilica in Venice were taken from the Hippodrome of Constantinople, just outside Hagia Sophia.

In 1453 Sultan Mehmed II conquered Constantinople and converted Hagia Sophia into a mosque. Minarets were added at the four corners, Christian mosaics were covered with plaster and Quranic calligraphy, and the building served as the principal mosque of the Ottoman capital for 481 years. In 1934 Mustafa Kemal Ataturk converted it into a museum to symbolize Turkey’s secular orientation. In 2020 the Turkish government reconverted it into a mosque, where it functions today.

What to See Inside

The main hall is dominated by the dome, which appears to float because the architects used a series of windows along its base to make the supporting structure invisible from below. Stand directly under the center of the dome and look up, then walk slowly around the perimeter watching how the geometry shifts. The four pendentives at the corners of the dome carry six-winged seraphim, two with faces visible and two with faces still covered by Ottoman-era plaster gold.

The Byzantine mosaics in the upper galleries are the building’s other great treasure. The Deesis mosaic, showing Christ between the Virgin Mary and John the Baptist, dates from the 13th century and is considered the finest example of late Byzantine mosaic art anywhere. The Empress Zoe mosaic in the same gallery shows three different husbands gradually replaced as Zoe remarried, an unusually intimate piece of imperial family history embedded in religious art.

Note that since the 2020 reconversion, several restrictions apply to visitors. The upper galleries with the mosaics are not always accessible (check at the entrance), and during the five daily prayer times the building closes briefly to non-Muslim visitors. Photography is allowed but no flash. Women should bring a headscarf and shoulders should be covered. Entry is free for everyone, including non-Muslims, but expect queues in summer.

How to Visit Without the Crowds

Arrive at the entrance by 8:30 AM, ideally a weekday, and you will be inside within 15 minutes. Tour groups typically arrive at 10:00 AM and the line can stretch for an hour by 11:00. Plan for at least 90 minutes inside the building, more if you want to climb to the galleries or spend time studying the mosaics.

Avoid Friday afternoons when the building is closed for noon prayers (usually 12:30 to 14:30 in summer). The first two weeks of Ramadan also see modified hours. Outside of these specific restrictions, the building is open daily and visiting is generally smooth. The audio guide app from the Turkish Ministry of Culture is excellent and free, download it before arriving.

For the most atmospheric visit, return at sunset. The building stays open until 19:00 in summer and the late golden light through the western windows creates an almost theatrical effect inside the dome. Crowds are thinner in the late afternoon than at midday. If you have a day pass to multiple sites, you can do Hagia Sophia first thing in the morning and return at sunset to see how the light transforms the interior.

The Blue Mosque, Sinan’s Heir and the Six Minarets

Directly across the Sultan Ahmed Square from Hagia Sophia stands the building that was built to answer it, the Sultan Ahmed Mosque, known to the world as the Blue Mosque for the 20,000 hand-painted Iznik tiles that decorate its interior walls. Sultan Ahmed I commissioned the mosque in 1609 from architect Sedefkar Mehmed Aga, a student of the great Ottoman architect Mimar Sinan. The result is considered the high point of Ottoman classical architecture and is still a functioning mosque visited by both worshippers and travelers.

The Building and Its Architecture

The Blue Mosque is built on the classic Ottoman plan of a central dome supported by four semi-domes, themselves supported by smaller half-domes, creating a cascading effect that distributes weight outward to the corners of the building. The central dome is 23.5 meters in diameter and 43 meters high, smaller than Hagia Sophia but proportionally more elegant. The architect deliberately designed the mosque to complement rather than compete with the older building across the square.

The famous six minarets caused a scandal when the mosque was built, because the only other six-minaret mosque in the Islamic world at the time was the Masjid al-Haram in Mecca. Sultan Ahmed reportedly resolved the controversy by paying for a seventh minaret to be added to the Mecca mosque, restoring its unique status. Whether this story is literally true is debated, but it captures the imperial ambition that drove the project.

The interior decoration consists of approximately 20,000 hand-painted ceramic tiles from the famous Iznik workshops in northwestern Anatolia. The tiles feature traditional patterns of tulips, roses, lilies, cypress trees and abstract geometric designs in shades of blue, turquoise, green and red. The tile colors are dominated by blue, hence the popular name. The original tiles are still in place after 415 years and remain among the finest examples of Ottoman ceramic art.

Visiting as a Tourist

The Blue Mosque is open to non-Muslim visitors outside of the five daily prayer times. Visitors enter through the north door on the side facing Hagia Sophia. Shoes must be removed and placed in plastic bags provided at the entrance. Women must cover their heads (scarves are provided free at the door if you do not have one) and shoulders. Men must wear long pants. Shorts are not allowed, though wraps are available for those who arrive underdressed.

Allow about 45 minutes for a full visit, including time to walk slowly around the interior and study the tiles in different sections. The best views are from the area immediately behind the central area, looking up at the dome and down the entrance corridor toward the courtyard. Photography is allowed without flash. Speaking quietly and respecting that this is a functioning place of worship is essential.

Friday noon prayers are the largest weekly gathering and the mosque closes to tourists from about 12:30 to 14:30 on Fridays. During Ramadan, evening prayers are particularly busy and tourist access is limited in the hours after sunset. Outside of these specific times, the mosque is welcoming to visitors of all backgrounds, and entry is free.

The Surrounding Square

The Sultan Ahmed Square, between Hagia Sophia and the Blue Mosque, sits on the foundations of the ancient Roman Hippodrome where chariot races were held from the 3rd to the 13th centuries. Three ancient monuments still stand on the central axis of the old racecourse, the Egyptian Obelisk of Thutmose III (carved around 1450 BC), the Serpent Column (from Delphi, brought to Constantinople in 324 AD), and the Walled Obelisk (a 10th century Byzantine commemorative monument).

The Egyptian Obelisk is particularly remarkable. It is a single block of pink granite quarried in Aswan, carved with hieroglyphs around 1450 BC, brought to Constantinople in 357 AD by Emperor Constantius II, and erected on its current marble pedestal in 390 AD by Emperor Theodosius I. The pedestal carvings show the imperial family watching chariot races, a snapshot of late Roman court life frozen in stone.

The square also contains the German Fountain, a 1901 gift from Kaiser Wilhelm II of Germany to Sultan Abdulhamid II, marking a brief moment of Ottoman-German diplomatic friendship before World War I. The neo-Byzantine octagonal kiosk is striking but is the most modern monument in the square by far. The contrast between the ancient obelisk and the Wilhelmine kiosk captures Istanbul’s eternal layering of empires and political alliances.

Topkapi Palace, Four Hundred Years of Ottoman Power

Five minutes walk from Hagia Sophia, on the highest point of the Sultanahmet peninsula overlooking the Bosphorus, stands the palace from which the Ottoman Empire was governed for 400 years. Topkapi Palace is not a single building but a complex of pavilions, courtyards, gardens and chambers spread across 700,000 square meters. Visiting it well takes at least 3 hours, and you can easily spend a full day if you read the interpretive material and visit every section.

The Four Courtyards

The palace is organized around four successive courtyards, each progressively more private as you move inward. The First Courtyard is essentially a public park within the outer walls, used in Ottoman times for ceremonial gatherings and for ordinary citizens visiting the imperial mint, bakery and stables. The famous Imperial Gate (Bab-i Humayun) marks the entrance from Hagia Sophia square. You do not need a ticket to enter the First Courtyard.

The Second Courtyard, accessed through the Gate of Salutation (Bab-us Selam), contains the Imperial Council chamber where the grand vizier and ministers met to administer the empire, and the kitchens that produced food for up to 4,000 palace residents and guests on busy days. The kitchens now house the largest collection of Chinese porcelain outside of China, including thousands of pieces collected by Ottoman sultans over four centuries.

The Third Courtyard, behind the Gate of Felicity (Bab-us Saade), was the private residence of the sultan and his immediate household. The Audience Chamber, where ambassadors were received, sits just inside this gate. The Treasury, with the famous Topkapi Dagger (encrusted with three large emeralds and made famous by the 1964 film of the same name), is in this courtyard. So is the Chamber of the Holy Relics, housing sacred objects associated with the Prophet Muhammad and the Prophets.

The Harem

The Harem, accessed by a separate ticket from a doorway in the Second Courtyard, is the most fascinating section of the palace for many visitors. The word “harem” means “forbidden” in Arabic and refers to the private quarters of the sultan’s family, off-limits to all men except the sultan, his sons and the black eunuch staff. At its peak the Harem housed 400 women including the sultan’s mother (the powerful Valide Sultan), his official wives, concubines, daughters and the female servants and teachers who managed the complex.

The Harem chambers display the tiles, woodwork, frescoes and ornate ceilings of late Ottoman decorative arts. The Hunkar Sofasi (Imperial Hall) is the largest chamber, where the sultan received intimate guests and held family ceremonies. The chambers of the Valide Sultan, the Crown Prince and the favorite concubines line the surrounding corridors, each with its own decorative scheme reflecting the period when it was last refurbished.

The Harem ticket is separate (around 250 lira) and absolutely worth it. Without entering the Harem you only see half of the palace and miss the most personal and atmospheric chambers. The visit takes about an hour, following a fixed route through the women’s quarters, the central courtyards, and the chambers of the imperial family. The audio guide is recommended.

The Treasury and the Holy Relics

The Imperial Treasury in the Third Courtyard contains the accumulated wealth of the Ottoman sultans, including the Topkapi Dagger, the 86-carat Kasikci (Spoonmaker’s) Diamond (one of the largest in the world), gold-thread embroidered ceremonial robes, jewel-encrusted thrones and ceremonial weapons. The collection is overwhelming and tightly displayed, allow at least 45 minutes to walk through everything.

The Chamber of the Holy Relics, in a separate section of the Third Courtyard, contains objects venerated in the Islamic tradition, including what are believed to be a strand of the Prophet Muhammad’s beard, his footprint pressed in stone, the swords of the first four caliphs, and a section of the Black Stone from the Kaaba in Mecca. Continuous Quran recitation in the chamber sets a reverent tone, even for non-Muslim visitors. Photography is not allowed.

The combination of the imperial Treasury and the Holy Relics chamber gives you a sense of how the Ottoman sultans positioned themselves as both political rulers and religious leaders of the Sunni Muslim world. Especially after Sultan Selim I conquered Mecca and Medina in 1517 and assumed the title of Caliph, the sultans were the spiritual heads of Sunni Islam, and the relics in the chamber are part of how that authority was made tangible.

The Basilica Cistern, the Grand Bazaar and the Other Essential Stops

Beyond the three monumental sites, Sultanahmet contains several other places that deserve a place in any first visit. The Basilica Cistern and the Grand Bazaar in particular are world-class sights that would be major attractions in any other city. In Istanbul they are part of the supporting cast, which tells you something about the density of significance on this peninsula.

The Basilica Cistern

The Basilica Cistern is the largest of several hundred ancient cisterns that lie under the Sultanahmet peninsula. Built by Emperor Justinian in 532 AD, the same year he started Hagia Sophia, the cistern stored water brought by aqueduct from the Belgrad Forest 19 kilometers north. The cistern measures 138 by 65 meters and could hold 80,000 cubic meters of water, enough for the imperial palace and the surrounding city for weeks.

The interior consists of 336 marble columns arranged in 12 rows of 28, each column 9 meters tall, supporting a brick vaulted ceiling. Most of the columns were recycled from earlier Roman buildings, which is why their capitals and bases vary in style. Two columns in the back northwest corner of the cistern rest on bases carved with the head of Medusa, one upside down and one sideways. The reason for the orientation is debated, with theories ranging from neutralizing the petrifying power of Medusa’s gaze to simply using whatever blocks were the right size.

The cistern was largely forgotten after the Ottoman conquest, used by local residents to draw water and even to fish through holes in the floors of their houses, until it was rediscovered by the French scholar Petrus Gyllius in the 16th century. It was opened to the public in 1987 after a major restoration. Walking through the dimly lit columned hall, with classical music playing softly and water still filling the lower portions, is one of the most atmospheric experiences in Istanbul. Visit takes about 45 minutes and entry is around 600 lira.

The Grand Bazaar

Twenty minutes walk northwest of Sultanahmet, the Grand Bazaar (Kapali Carsi, meaning Covered Bazaar) has been a center of trade since the 1450s, just after the Ottoman conquest. The complex has grown over the centuries into one of the largest covered markets in the world, with 61 streets, over 4,000 shops, several mosques and bath houses, and an estimated 400,000 visitors per day in peak season.

The market is organized by trade. The carpets and kilims are in one section, the gold and jewelry in another, the leather, the spices, the antiques, the lamps, each in its own quarter. This organization dates from the Ottoman guild system, when craftsmen of each trade were required to operate from a specific area to facilitate quality control and tax collection. The pattern is still visible today, with some shops occupied by descendants of the original founding families.

For visitors, the Grand Bazaar is more about atmosphere than serious shopping. Prices are tourist prices and bargaining is expected, with opening offers often 50 to 100 percent above what a local would pay. Quality varies enormously, and unless you know what you are looking at, distinguishing a hand-knotted silk carpet from a machine-made copy can be impossible. If you are buying serious items, take a local Turkish friend or hire an independent guide. For casual souvenirs, just enjoy the bazaar as theater. Allow at least 90 minutes to walk through and get lost in.

Sunset and Evening

For an evening in Sultanahmet, head to one of the rooftop restaurants and bars overlooking Hagia Sophia and the Blue Mosque. Seven Hills Restaurant, the rooftop of Hotel Mosaic and the terrace of the Four Seasons are all famous for sunset views. Prices reflect the views, but a cocktail and a snack at sunset is one of the great Istanbul experiences and worth the splurge once.

For dinner, head down the hill to the Cankurtaran or Eminonu neighborhoods for genuine Turkish food at non-tourist prices. The fish sandwich (balik ekmek) sellers at the Eminonu pier serve grilled mackerel sandwiches for around 80 lira, eaten standing up looking at the Galata Bridge. The historic Hamdi Restaurant on the upper floor of a building near the Spice Bazaar serves outstanding Anatolian regional food with views over the Golden Horn.

After dinner, walk across the Galata Bridge for the evening view back at the Old City silhouetted against the sky. The fishermen line both sides of the bridge with their rods, the trams pass back and forth, and the call to prayer rises from a dozen minarets at once. There is no better way to end a day of walking through 1,500 years of imperial history. For details on other Turkish destinations beyond Istanbul, see my guides to Cappadocia and Ephesus.

How to Get to Istanbul and Plan Your Stay

Istanbul is the largest city in Europe and the only city in the world spanning two continents. Logistics on the ground can intimidate first-time visitors, but the practical infrastructure for tourists has improved enormously in the last decade. Here is what I tell friends planning their first trip.

Getting In From the Airport

Istanbul has two airports. Istanbul Airport (IST), opened in 2018 on the European side of the city, handles most international flights. Sabiha Gokcen Airport (SAW) on the Asian side handles many low-cost European flights and most domestic flights. Both have good public transport and taxi options into the city.

From Istanbul Airport (IST), the easiest options are the Havaist airport bus (around 200 lira, 60 to 90 minutes to Sultanahmet), the metro line M11 (around 30 lira, 1 transfer needed to reach Sultanahmet), or a taxi (around 800 to 1,000 lira, 45 to 75 minutes depending on traffic). The metro is the cheapest and most reliable option, just be ready to navigate the M11-M2-T1 transfer with luggage.

From Sabiha Gokcen Airport (SAW), the Havabus airport bus runs to Taksim Square (around 200 lira, 60 to 75 minutes), from where you can take the M2 metro and T1 tram to Sultanahmet. A taxi from SAW to Sultanahmet costs around 1,000 to 1,500 lira and takes 60 to 90 minutes depending on traffic. Sabiha Gokcen is on the Asian side and the trip involves crossing one of the two bridges, which can be slow in peak hours.

Where to Stay in Sultanahmet

For a first visit focused on the Old City, stay in Sultanahmet itself. You can walk to all the major sights and you wake up to the call to prayer echoing across the peninsula. Hotel options range from luxury (Four Seasons Sultanahmet, Sultan Ahmet Sarayi Hotel) to mid-range (Hotel Ibrahim Pasha, Hotel Empress Zoe) to budget (Cheers Hostel, Big Apple Hostel). Mid-range hotels typically cost 2,000 to 4,000 lira per night including breakfast.

For a more contemporary Istanbul experience, stay in Beyoglu or Karakoy on the European side north of the Golden Horn. These neighborhoods have the best restaurants, bars, art galleries and music venues. You can reach Sultanahmet by tram in 15 minutes. Hotels in these areas include the Soho House, the Tomtom Suites and the boutique Karakoy Rooms.

For an Asian-side experience, stay in Kadikoy, the laid-back district across the Bosphorus from Sultanahmet. Daily ferries connect Kadikoy with Karakoy and Eminonu in 20 minutes. Kadikoy is where locals live and eat, with vibrant markets, music venues and restaurants at prices about 30 percent below the European tourist areas. This is the choice for repeat visitors or anyone wanting to escape the central tourist concentration.

Getting Around

Istanbul has a good public transport network combining metros, trams, buses, ferries and a funicular. The single most useful payment method is the Istanbulkart, a rechargeable smart card available at any metro or tram station. The card costs 130 lira (refundable) and rides cost 17 to 25 lira each. Tap on and tap off at gates and on bus readers.

For Sultanahmet visitors, the T1 tram line is the workhorse. It runs from Bagcilar in the west, through Sultanahmet (Sultanahmet station), Eminonu (for ferries to Asia), Karakoy (for connections to Beyoglu), and Kabatas. From Kabatas you can take the F1 funicular up to Taksim Square.

Ferries across the Bosphorus are one of the great pleasures of Istanbul. The standard commuter ferries from Eminonu, Karakoy or Kabatas to Kadikoy or Uskudar on the Asian side take 20 minutes and cost the same as a metro ride. The longer Bosphorus tour ferries take 90 minutes for a one-way trip up to Anadolu Kavagi at the northern end of the Bosphorus, with views of the palaces, fortresses and mansions along both shores.

Frequently Asked Questions

How many days do I need to see Istanbul?

Three full days is the minimum for a first visit, allowing one day for Sultanahmet (Hagia Sophia, Blue Mosque, Topkapi, Basilica Cistern), one day for Beyoglu and the Grand Bazaar, and one day for a Bosphorus cruise and the Asian side. Five days lets you add Ottoman tombs, the Chora Church mosaics, the Princes Islands and a deeper exploration of neighborhoods. A week is ideal for fully understanding the city’s geography.

Is the Istanbul Tourist Pass worth it?

For a focused 3-day visit including Hagia Sophia, Topkapi Palace, the Basilica Cistern, and a Bosphorus boat tour, the official Istanbul Museum Pass (Museum Pass Istanbul) saves money compared to individual entries. The pass currently costs around 2,500 lira for 5 days and covers the main historical sites plus several smaller museums. The third-party “Istanbul Tourist Pass” with included transport is more expensive and worth it only if you also want skip-the-line privileges.

What should I wear when visiting mosques?

Women should cover their heads, shoulders and knees. Most mosques provide free headscarves at the entrance, but bringing your own is more comfortable. Men should wear long pants and shirts with sleeves, no shorts or sleeveless tops. Everyone removes shoes at the entrance (bags are provided). The dress code is enforced gently but consistently, and inappropriate clothing will be politely refused at the door.

Is Istanbul safe for tourists?

Yes, Istanbul is generally safe by international city standards. Petty theft (pickpocketing) does occur in crowded tourist areas like Sultanahmet, the Grand Bazaar and Istiklal Street. Common-sense precautions apply, keep your bag in front of you in crowds, do not flash expensive jewelry or cash, and avoid empty side streets late at night. Violent crime against tourists is very rare. Solo female travelers report feeling safe in Istanbul, though catcalling does happen in some areas.

When is the best time to visit Istanbul?

April to June and September to October offer the best combination of mild temperatures (15 to 25 degrees Celsius), low rainfall, manageable crowds and good light for photography. July and August are hot (30 to 35 degrees) and humid, with peak crowds. November to March can be cold and rainy, but the city has its own atmosphere in winter, with fewer tourists and lower prices. December and January sometimes see snow, which is striking on the domes and minarets.

Can I do a day trip to other places from Istanbul?

The Princes Islands (Adalar) are an easy half-day or full-day trip by public ferry, with car-free streets, Ottoman-era wooden mansions and pine forests. The Bosphorus cruise to Anadolu Kavagi at the Black Sea is another classic full-day trip. For more ambitious day trips, the ancient city of Troy is 5 hours away (better as an overnight). For a longer adventure, fly to Cappadocia in 90 minutes for a 2 or 3 day visit, see my Cappadocia itinerary. The Hagia Sophia article on UNESCO’s heritage list gives additional context on the historic areas of Istanbul.