Basilica Cistern

The Basilica Cistern is one of the largest ancient water storage structures in Istanbul. There are hundreds of marble columns and some very special columns shaped like statues you can find inside.

Explore recommended itineraries, schedules and pricing to help plan your visit to Istanbul.

Tall columns inside the ancient underground water reservoir of Istanbul, named Basilica Cistern

Tall columns inside the ancient underground water reservoir of Istanbul, named Basilica Cistern

Distilled Information

Basilica Cistern

One Sentence Review

"A great underground water reservoir with a beautiful atmosphere; great for photos."

Ticket Price

1500 Turkish Liras (updated 2026)

Accessibility

The basilica cistern is wheelchair accessible but caution advised due to wet ground.

Location & Logistics

In the old district of Istanbul, visit while you're around Hagia Sophia.

Basilica Cistern: The Ancient Underground Water Reservoir in Istanbul

Are you wondering if it is worth visiting the Basilica Cistern? Absolutely. This ancient underground water reservoir offers an unforgettable atmosphere and is located just steps away from the Hagia Sophia in the historic Sultanahmet district of Istanbul. The cistern stands today as one of Istanbul’s most extraordinary architectural treasures.


Historical Background

The Basilica Cistern was commissioned by Byzantine Emperor Justinian I in the 6th century AD. It was engineered as a massive subterranean filtration system for the city. Using a network of aqueducts, it channeled clean water from the Belgrade Forest located 20 kilometers north.

The chamber is 453 feet long and 231 feet wide (138 meters long and 65 meters wide) and could hold up to 80,000 cubic meters of water. Today, it operates as a museum.

Inside the Cistern

The Columns

The subterranean chamber is supported by 336 marble columns arranged in 12 rows. These pillars that stand 30 feet (9 meters) high feature a beautiful mix of Corinthian and Doric capitals. Because they were recycled from various older Roman ruins, each column has00 its own unique design and history.

Rows of marble columns with Corinthian and Doric capitals in the Basilica Cistern, Istanbul

336 marble columns, many recycled from older Roman ruins, support the cistern's ceiling.

Medusa Heads

In the far northwest corner lie the cistern’s most famous highlights: two giant Medusa heads acting as column bases. Archeologists believe these Roman era sculptures were placed sideways and upside down either as convenient structural supports or as an effort to neutralize the petrifying gaze of this mythological creature.

Sideways Medusa head column base in the Basilica Cistern, Istanbul

One of the cistern's two Medusa head column bases, placed sideways possibly to neutralize the Gorgon's gaze.

The Tear Column

Another remarkable feature is the Tear Column, recognizable by its tear shaped carvings. Local lore suggests these engravings were crafted as a tribute to the hundreds of workers who lost their lives during the cistern’s construction.


The beauty of the cistern has captured the attention of Hollywood and classic literature alike. It serves as the dramatic backdrop for the climax of Dan Brown’s thriller Inferno. Classic cinema fans will also recognize it from the 1963 James Bond film From Russia with Love, where 007 rows a boat between the columns.

Got Questions?
We're here to help!

Frequently Asked Questions

What is Basilica Cistern?

The Basilica Cistern used to be a water reservoir back in the day, now it's a museum where visitors can see many ancient columns.

Where is Basilica Cistern?

The Basilica Cistern is close to Hagia Sophia. We suggest you visit the cistern while you're in the area.

Is it worth going to Basilica Cistern?

The cistern can be a great place for photos with its ancient columns and spectacular lighting. It's a worthwhile addition to your trip in Istanbul if you have an extra 30 minutes.