By Mehmet Kurtkaya
Founder of Twarp.com, exploring Turkey since 1995
Last updated: May 10, 2026

Basilica Cistern (Yerebatan Sarayı)

Basilica Cistern interior columns Medusa head in Basilica Cistern

If you go to Istanbul, you should not miss the opportunity to visit the Basilica Cistern in Sultanahmet! This amazing structure was built by Byzantine Emperor Justinian in the 6th century to provide water to the Byzantine Palace from Belgrade Forest in the Black Sea region of Istanbul, some 19 kilometers away. The cistern was built on the grounds of a Roman Basilica built two centuries earlier, hence the name of the cistern.

It is located right across the street from Hagia Sophia (about 200 meters away), in the historical peninsula of Istanbul (Sarayburnu), where Topkapi Palace and Blue Mosque are also located. The most proper public transportation to reach Sultanahmet is the tram you can take from Kabataş, down from Taksim or Aksaray or the airport area to Sultanahmet station. It is very easy to go to the cistern on foot in only 4-5 minutes.

When you enter the cistern, first you go down the wet, dark stairs and then to the main chamber. Inside the cistern it is very cold and dark, there are only some greenish lights. This giant building consists of a lot of columns which resembles a forest. Wonders of Roman sculpture, two Medusa heads located at the end of the alley, are really worth seeing! There are also a lot of mythological stories which make the cistern more and more mystical. While you are visiting and exploring the cistern, tunes of classical music accompany you. Besides, a lot of interesting events happen here such as Sufi Jazz concerts, poem nights, and Bosphorus Modern Dance Theatre shows. You can also participate for free and enjoy Turkish traditions.

The cistern was used as a shooting location in internationally acclaimed films, first in "From Russia with Love," possibly the best of the Bond series with Sean Connery, and also in the film "The International".

Visitor Information

Hours: Open daily 9:00 AM to 7:00 PM (summer extended hours). Last entry 30 minutes before closing.

Admission: Approximately 400 TL. Museum Pass Istanbul is not accepted.

Best time to visit: Early morning (9-10 AM) or late afternoon (4-6 PM) to avoid long queues. The cistern is popular and can have 30-60 minute waits at peak times (11 AM - 3 PM).

The cistern is cool year-round (around 15°C / 59°F), a welcome break from summer heat. Bring a light jacket even in summer.

A unique and very mystical experience!

Basilica Cistern on Istanbul Map

Insider Tip: The Medusa heads are located at the far end of the cistern. One is placed sideways, the other upside down, their meaning is still debated. For the best photos, bring a phone with good low-light capability (flash is not allowed). The cistern is now part of some combined tour tickets, check at the entrance. The fish in the cistern are a popular photo subject. Visit on a weekday morning for the smallest crowds.

About the Author

Mehmet Kurtkaya is the founder of Twarp.com, one of the web's longest-running Turkey travel resources (est. 1995). His research into Anatolia's ancient civilizations is published in Who Built Göbeklitepe and Echoes of the Ice: How Migrations Made Civilizations.