begüm Hidden among the history-filled streets of Istanbul lies a remarkable treasure: the Basilica Cistern. This massive underground structure, dating back to the Byzantine era, captivates visitors with its architecture and mystical atmosphere. The Medusa heads tucked beneath some of the columns create a sense of depth and silence, offering what feels like a journey through time.
In this guide, you will find all essential details about Basilica Cistern, including its location, entrance fees, visiting hours, online ticket information, and history. This historic site is a must-see for both history enthusiasts and photography lovers.
History of Basilica Cistern
The Basilica Cistern was constructed in the 6th century by Byzantine Emperor Justinian I and is Istanbul’s largest and most famous underground water reservoir. Its purpose was to supply water to the city and to support significant structures such as Hagia Sophia. Covering approximately 9,800 square meters, the cistern is supported by 336 columns.
One of the cistern’s most striking features is the presence of Medusa heads under some of the columns. Although the exact reason for their placement—sometimes sideways or upside down—is unclear, historians suggest they might have served to ward off evil spirits or provide structural stability. These heads, one of the most recognizable figures in Greek mythology, lend the cistern a mysterious and enchanting aura.
Over the centuries, the Basilica Cistern functioned both as a water reservoir during the Byzantine and Ottoman periods and occasionally for military and strategic purposes. In the 19th century, as Istanbul modernized and underwent restoration, the cistern began welcoming visitors and eventually became a tourist site with museum-like status.
Today, the Basilica Cistern stands out as one of Istanbul’s most visited historical attractions, notable for both its historical significance and architectural design. The gothic columns, mysterious ambiance, and reflective water surfaces offer visitors an unforgettable experience.
Architectural Features
The architecture of the Basilica Cistern is truly breathtaking. Measuring 140 meters in length and 70 meters in width, this vast structure resembles an underground palace with its 336 columns. Many columns were brought from different ancient structures, each holding a fragment of history. One of the most intriguing details is the upside-down Medusa heads beneath certain columns. While several theories exist about why they were placed this way, the true reason remains a mystery.
The vaults above were designed to facilitate water flow, while the calm water inside reflects the surrounding columns like a painting. This combination of architectural ingenuity and serene atmosphere makes the Basilica Cistern a uniquely historical and aesthetic experience.
Where is the Basilica Cistern?
Located in Sultanahmet, in the Fatih district of Istanbul, the Basilica Cistern is in an easily accessible location, right across from Hagia Sophia.
Areas and Structures to Visit in the Cistern
There are several special points to explore in the Basilica Cistern. One of the first sights upon entering from the main entrance is the grand rows of columns. You can walk among these columns and examine each of their unique designs. Many of the columns were brought from the Ancient Roman period and constructed in various styles.
Among the most striking features are the Medusa-headed columns. Beyond these, as you move deeper into the cistern, each column tells a story of a different historical era. The lighting inside the structure enhances the beauty of the columns and the overall atmosphere.
Another notable area is the wide central walkway, where you can easily observe the reflections on the water’s surface as you pass between the columns. Every corner of the cistern offers a unique combination of history and ambiance, making exploration truly immersive.
Basilica Cistern Entrance Fees 2025
The Basilica Cistern is open to visitors daily starting at 09:00 and remains accessible until 18:30. Due to session arrangements, it is closed from 18:30 to 19:30. After 19:30, it reopens for evening visits until 23:50.
Please note that Müze Kart is not valid at the Basilica Cistern.
09:00–18:30
- Local Visitors: 300 TL
- Foreign Visitors: 1,300 TL
- Students: 75 TL
19:30–22:00
- Local Visitors: 500 TL
- Foreign Visitors: 2,000 TL
- Students: 300 TL
You can purchase online tickets for Basilica Cistern [here].
If you want to avoid waiting in line and use an audio guide, click [here].
Frequently Asked Questions
How to Get to the Basilica Cistern?
You can reach the Sarnıca by public transportation from many different points in Istanbul. It’s very easy to walk from Eminönü, Sultanahmet, or Beyazıt. Since it’s close to Sultanahmet Square, you can also easily reach it by tram. After getting off at the Sultanahmet stop on the T1 tram, it’s only a 5-10-minute walk.
Basilica Cistern Online Ticket
You can purchase your tickets online through Passo. Purchasing tickets online is recommended to avoid waiting in line, especially during peak hours.
Is the Basilica Cistern museum card valid?
The Museum Card is not valid for entry to the Basilica Cistern, because the cistern is not affiliated with the Ministry of Culture and Tourism.
In which city is the Basilica Cistern?
The Basilica Cistern is located in Istanbul’s Fatih district, very close to Sultanahmet Square. Located on Soğukçeşme Street, southwest of Hagia Sophia, the cistern is easily accessible from Sultanahmet Square on foot or by tram.
What is the feature of the Basilica Cistern Medusa?
The Medusa heads, located at the bases of some of the cistern’s columns, represent the legendary figure from Greek mythology. Some of the heads are placed upside down or sideways, and historians believe this was intended to ward off evil spirits or provide structural stability. These Medusa heads add a mystical and mysterious atmosphere to the Basilica Cistern and are one of the most intriguing details for visitors.
How much is the entrance fee to the Basilica Cistern?
Between 9:00 AM and 6:30 PM: Domestic Visitors: 300 TL
Foreign Visitors: 1,300 TL
Students: 75 TL
Between 7:30 PM and 10:00 PM: Domestic Visitors: 500 TL
Foreign Visitors: 2,000 TL
Students: 300 TL
What are the visiting hours of the Basilica Cistern?
It can be visited every day of the week between 09:00 and 22:00. Tickets for visits between 19:30 and 22:00 can only be purchased from the box office.
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