Istanbul Sultanahmet: Two Empires, One Square

Rome's racetrack, the Blue Mosque, Hagia Sophia's 1,500-year dome, an underground palace of columns, and the sultans' Topkapi.

This is a self-guided walk, not a guided tour with a leader: no booking, no fixed start time. See the walking route and the walking map before you go, then follow the numbers — the audio guide plays by itself as you reach each stop. Free, with no app to install and no sign-up.

At ~55 min it fits a half day of independent travel, and joining it to another walk in Istanbul makes a full-day itinerary.

Visiting Istanbul Sultanahmet: Two Empires, One Square — hours, tickets and getting there

Opening hours Blue Mosque closes to visitors during the five daily prayers
Admission Blue Mosque free · Hagia Sophia ticketed for visitors
Getting there Sultanahmet tram stop (T1) — the square is between both monuments
Cover shoulders and knees; women need a headscarf for the mosque (loaners at the door)

Checked 2026-08. Always confirm on the official site before you go.

All Turkey walking tours · All 149 routes

Istanbul, Turkey · ~55 min · 2.7 km · 7 stops

Stops on this walk

1. The Hippodrome (Sultanahmet Square)

The chariot racetrack of Constantinople — 100,000 Romans roared where you now stand.

This long plaza follows the outline of the Hippodrome, the chariot stadium of Constantinople — capital of the Roman and then Byzantine empires for over a thousand years. Up to 100,000 spectators watched races here; the Blues and Greens, the great fan factions, could make or unmake emperors. The Nika riots of 532 began in these stands and ended with 30,000 dead and half the city burned. Three monuments survive on the old central barrier: an Egyptian obelisk of 1490 BC (the oldest object standing in Istanbul), the Serpent Column cast from Persian shields after the Greek victory at Plataea in 479 BC, and a rough-stone obelisk stripped of its bronze by Crusaders in 1204.

Rome, Byzantium, the Crusades, the Ottomans — every ruler of this city kept the square and repurposed it. Empires here didn't erase their predecessors; they moved in on top of them. That vertical cohabitation is Istanbul's entire method.

2. Blue Mosque (Sultan Ahmed Mosque) Sultanahmet Camii

Six minarets and 20,000 blue Iznik tiles — a young sultan's answer to Hagia Sophia.

Sultan Ahmed I was nineteen when he ordered this mosque in 1609, building it directly opposite Hagia Sophia — a deliberate architectural duel with the thousand-year-old church-turned-mosque across the park. Its six minarets caused a scandal: only Mecca had six. The solution was imperial — a seventh was funded for Mecca. The nickname comes from the interior: more than 20,000 handmade Iznik tiles in tulip, carnation and cypress patterns, lit by 260 windows. The tile order was so vast it effectively exhausted the Iznik workshops — this building is both the peak and the end of their golden age.

This is a working mosque: five times daily, tourism pauses for prayer. Dress modestly, remove shoes, and time your visit between prayers — the etiquette is part of the experience, not an obstacle to it.

3. Hagia Sophia Ayasofya

For a thousand years the largest cathedral on earth — church, mosque, museum, mosque again.

Emperor Justinian completed Hagia Sophia in 537 — in five years and ten months, a speed that still astonishes engineers. Entering it, he reportedly said 'Solomon, I have surpassed you.' For over 900 years it was the largest cathedral in the world; coronations, councils and the final Byzantine mass of 1453 happened under its dome. When Mehmed II took Constantinople in 1453 at age 21, he rode to this building first and converted it to a mosque the same week — adding minarets, preserving mosaics under plaster. Secularized as a museum in 1934, it became a mosque again in 2020. Few buildings have carried this much history without ever closing.

The 31-meter dome seems to float on a ring of forty windows — Byzantine writers said it hung 'from heaven by a golden chain.' The trick is structural: pendentives, curved triangles that carry a round dome onto a square hall, perfected here for the first time at scale. Every dome from Venice to the Blue Mosque across the park descends from this solution. Upstairs in the gallery, the Deesis mosaic's Christ (13th century) survives — half-ruined and, most visitors find, more moving for it.

4. Basilica Cistern Yerebatan Sarnıcı

A sunken palace of 336 columns holding the city's emergency water — with two Medusa heads.

Justinian built this cistern in 532 to hold 80,000 tons of water for the palace quarter — siege insurance for a city whose aqueducts could be cut. Its 336 columns were recycled from pagan temples across the empire; the Turks later called it Yerebatan Sarayı, the 'sunken palace.' After the Ottoman conquest it was forgotten for a century, until a scholar noticed locals drawing water — and sometimes fish — through holes in their basement floors. Two colossal Medusa heads prop columns in the far corner, one sideways and one upside down: recycled rubble to the builders, guardian mystery to everyone since.

Walkways now cross the shallow water between lit columns — one of the world's most atmospheric pieces of infrastructure. Empires are judged by their monuments; the wise ones also built magnificent plumbing.

5. Topkapi Palace Topkapı Sarayı

Four courtyards of the Ottoman sultans — 400 years of empire run from garden pavilions.

For four centuries (1465–1856), the Ottoman Empire — stretching from Budapest to Baghdad — was governed from this hilltop compound. Topkapi is not one grand building but a sequence of four courtyards, each more restricted: markets and ministries first, then the divan and Janissaries, then the sultan's inner service, finally the private gardens. Power was measured in how far in you could walk. The Harem — home to the sultan's family, run by his mother — was a state institution of its own; in the 'Sultanate of Women' era, its occupants effectively directed the empire. The treasury shows the 86-carat Spoonmaker's Diamond and the emerald-hilted Topkapi Dagger; the palace kitchens once fed 4,000 people a day.

Compare this to Versailles, built in the same era: no single monumental facade, no hall of mirrors — instead kiosks, courtyards and sea views. Ottoman power didn't need to overwhelm visually; it controlled the doorways. From the fourth courtyard's terrace, the Bosphorus view explains the whole empire: whoever held this hill held the passage between two seas and two continents.

6. Caferağa Medresesi

A theological college by Sinan, now a courtyard of craft workshops.

Mimar Sinan built this small medrese in 1559 for Cafer Ağa, the chief white eunuch of Suleiman's palace. It is a single courtyard ringed by domed cells, each once a student's room, with a fountain in the middle and a plane tree over it. Since 1989 the cells have housed a crafts foundation. Calligraphy, marbling, miniature painting, ceramics and glass are taught and sold in the same rooms where theology was studied, and the courtyard works as a tea garden.

Everything else on this walk is monumental and was meant to be. This is the scale the empire actually lived at: one courtyard, sixteen rooms, a fountain, and a tree.

7. Binbirdirek Cistern (Cistern of Philoxenos)

The other cistern — older than the Basilica Cistern, and dry.

This is the second-largest surviving cistern in the city and probably the oldest, traditionally dated to the fourth century and associated with a senator named Philoxenos who came from Rome with Constantine. Its Turkish name means 'a thousand and one columns'; there are actually 224, and they are doubled — one column stacked on another — to carry the roof. It was drained long ago and used as a workshop, at one point for spinning silk. Unlike the Basilica Cistern there is no water and no queue, and you can see the floor.

You saw the famous cistern full of water and tourists. This one shows what those spaces were: not grottoes, but plumbing — built to be dry most of the year and forgotten the rest.