Constantinople survives in fragments across the old city. Our specialists know where they are, and how to read them.
Byzantine Istanbul is spread across the city: walls, cisterns, palaces and churches from Hagia Sophia out to the land walls, about 5 km to the west. Most carry no sign saying what they once were.
| What it is today | From Hagia Sophia | |
|---|---|---|
| Hagia Sophia | A mosque, with a ticketed visitor entrance to the gallery mosaics | Start here |
| The Hippodrome | An open square, the obelisk from Egypt and the Serpent Column still on its centre line | Under 1 km |
| Great Palace mosaics | A museum, closed since April 2023 for earthquake strengthening | Under 1 km |
| Şerefiye Cistern | Open every day, uncovered in 2010 beneath a municipal building | Under 1 km |
| Valens Aqueduct | Standing over the street, inside the UNESCO World Heritage site | About 2.5 km |
| Pantokrator | The Zeyrek Mosque, restored in 2019 | About 3 km |
| Pammakaristos | The Fethiye Mosque since 2022; its mosaic chapel is listed as closed for renovation | About 4.5 km |
| Chora | The Kariye Mosque since May 2024, ticketed for visitors, worship only on Fridays | About 5 km |
| Tekfur Palace | A museum at Edirnekapı, restored by the city in 2019 | By car |
| The land walls | Open to walk along at Edirnekapı, inside the UNESCO site | About 5 km |
| Yedikule Fortress | Open every day except Monday | About 6 km |
| Stoudios | A ruin under restoration, not yet open to visitors | By car |
Only 180 square metres of the Great Palace’s mosaic floor survive, from the fifth and sixth centuries. We trace the palace from the Hippodrome down to the Bucoleon sea walls while its museum is closed.
Researchers attribute at least 211 cisterns to the Byzantine city, and Şerefiye’s 32 columns came to light only in 2010. We take you below ground at the Basilica Cistern and the ones open beside it.
UNESCO gives Theodosius II’s land wall as 6,650 metres, with a second line of defence added in 447. We walk a stretch of the walls at Edirnekapı or Yedikule.
Rail works at Yenikapı uncovered the Theodosian Harbour and 37 Byzantine shipwrecks. Our guide Betül Başak spent two years as an archaeologist on the Marmaray digs.
Chora has been a mosque again since May 2024, and Pantokrator since its 2019 restoration. We bring the guide who studied Christian iconography to read their walls with you.
Tekfur Palace at Edirnekapı reopened as a museum after the city restored it in 2019, near the remains of the Blachernae Palace. We pair it with Chora and the walls, on the same side of the city.
Since 2020, several Byzantine sites have closed, changed what they are or started charging visitors.
Ask for any of them by name when you write, or see all our guides.
Archaeologist
Licensed since 2011, with degrees in classical archaeology and art history, she dug on the Marmaray project for two years.
She guides in English, with intermediate Spanish.
Greek and Latin
She studied Greek and Latin, so an inscription on a wall is a text she can read with you.
She has excavated at Zeugma, the ancient city known for its Roman mosaics.
Iconography
Her MA in art history specialised in Christian iconography, so she reads a mosaic, a dome and a saint cycle with you.
Chora and its iconography are among her long-standing subjects.
Walls, water, mosaics or the harbour: tell us what you came for, and how long you have.
We match the guide to what you came for, and the plan we send names them.
Prayer times, closing days and restorations set the order, long before you land.
The land walls sit about 5 km from Hagia Sophia, so a private vehicle can be part of the plan.
Istanbul keeps the Hippodrome, Hagia Sophia’s gallery mosaics, cisterns such as Şerefiye, the Valens Aqueduct, churches that are now mosques such as Chora and Pantokrator, Tekfur Palace and the land walls of Theodosius II.
Some are open streets, some take a ticket, and a few are closed for restoration.
Yes. Chora in Istanbul reopened as the Kariye Mosque on 6 May 2024, and visitors from abroad enter with a ticket. On Fridays it opens for worship only.
No. Istanbul’s Great Palace Mosaic Museum, in the Arasta Bazaar beside the Blue Mosque, closed temporarily on 10 April 2023 for earthquake strengthening and restoration. The Other Tour checks it again before every day we plan.
Researchers combining the two most recent studies attribute at least 211 cisterns to Byzantine Constantinople, under today’s Istanbul.
You can go down into a few, among them the Basilica Cistern and Şerefiye, whose 32 columns came to light in 2010.
UNESCO gives the land wall of Theodosius II in Istanbul as 6,650 metres, with a second line of defence created in 447. Long stretches still stand and can be walked, at Edirnekapı and at Yedikule.
Rail works at Yenikapı in Istanbul uncovered Constantinople’s Theodosian Harbour and 37 Byzantine shipwrecks from the 5th to the 11th centuries.
The Istanbul Archaeological Museums began the dig in November 2004, and it also brought up tens of thousands of artefacts.
Not yet. Stoudios in Istanbul, a basilica older than Hagia Sophia, is under restoration by the Directorate General of Foundations, which is working to open it to visitors.
The mosque in Üsküdar that opened in 2025 is a different building, the İmrahor Mosque.
Not for every site, but most of Byzantine Istanbul is unlabelled: walls by the road, columns in squares, churches under mosque names. A specialist guide from The Other Tour tells you which fragment is which, and plans the day around what is closed.
Your dates, who is coming and which Byzantium you came for. We reply within a day with a plan and the name of the guide we would send.
The Other Tour is an immersive way to experience Istanbul and the rest of Turkey, led by licensed local guides who take you beyond the tourist spots into the lived culture and quiet corners of Cappadocia, Antalya, Ephesus, Bodrum, and the Mediterranean. We also build personalized travel planning, private tours, and custom itineraries — crafted around what you’re actually curious about, in any region of the country.