The Basilica Cistern was constructed during the reign of
Byzantine Emperor Justinian I (527–565) to supply water to
the Great Palace, the imperial residence, and surrounding public buildings.
An earlier cistern had existed on the same site during the time of
Emperor Constantine I, but it was severely damaged by a major fire.
Following this destruction, Justinian I ordered the
reconstruction and expansion of the cistern, resulting in the structure
that survives today. Water was transported to the cistern through the
Bozdoğan (Valens) Aqueduct and a network of additional aqueducts
extending from the Belgrade Forest.
Measuring approximately 140 by 70 meters and covering an area of
9,800 square meters, the Basilica Cistern is supported by
336 marble columns arranged in
12 rows of 28 columns each.
With an estimated water storage capacity of nearly
100,000 tons, the vast and column-filled interior created a
palace-like appearance, leading to its historical name,
“Yerebatan Palace”.
Basilica Cistern Highlights
🗿
The Medusa Heads
Two mysterious Byzantine-era Medusa sculptures placed as column bases.
Positioned sideways and upside down, they are believed to serve
protective and symbolic purposes.
🏛️
Marble Columns
A total of 336 marble columns arranged in
12 rows of 28 columns.
Many were reused from Roman structures.
💡
Atmospheric Lighting
Carefully designed lighting creates
dramatic reflections on the water
and enhances the underground atmosphere.
🌊
Water Reflections
Shallow water mirrors the columns above,
producing a dream-like visual effect
and a sense of depth.
🚶
Wooden Walkways
Elevated platforms allow visitors to explore
the cistern comfortably and safely
while preserving the structure.
🎶
Sound & Ambience
The subtle sound of water dripping from the vaulted ceiling,
combined with occasional music, creates a
calm and contemplative experience.
💧
The Column of Tears
A unique column distinguished by tear-shaped patterns,
believed to commemorate the workers involved in construction.
🎨
Light Installations & Exhibitions
Contemporary art and light exhibitions occasionally transform the space,
blending ancient architecture with modern expression.
Do I Need a Guided Tour to Visit the Basilica Cistern?
A guided tour is not mandatory to visit the Basilica Cistern.
The site can be explored independently, and most visitors complete
their visit within 30 to 45 minutes.
However, guided tours offer clear advantages, including
historical context, architectural explanations, and stories behind
iconic features such as the Medusa heads and the Column of Tears.
In-depth historical information about Byzantine engineering and the cistern’s construction
Assistance navigating the dark and maze-like corridors
The opportunity to ask questions and gain deeper cultural insight
Visitors who prefer flexibility often choose to explore the Basilica Cistern
on their own. By purchasing an entrance ticket with an
audio guide, you can enjoy the site at your own pace while still
receiving detailed explanations.
Both options allow you to fully experience the Basilica Cistern —
the choice depends on whether you prefer independent exploration or a
guided, in-depth tour.
Things to Know Before Visiting the Basilica Cistern in Istanbul
💡Dim lighting: The interior is dimly lit, so allow a few minutes for your eyes to adjust.
👟Slippery floors: The floor may be damp and slippery — wear comfortable, non-slip shoes.
🧥Cool temperature: The temperature inside the cistern is cooler than outdoors, even in summer.
📷Photography rules: Photography is allowed, but flash and professional equipment may be restricted.
⏰Peak hours: Late morning and early afternoon are usually the busiest times.
🌦️All-weather attraction: The visit is mostly indoors, making the Basilica Cistern suitable in all weather conditions.
Basilica Cistern Entry: Should I Buy My Ticket On-site or Online?
Visitors can purchase Basilica Cistern tickets either directly at the entrance or
online in advance. While buying tickets on-site is possible, queues can become
quite long, especially during weekends and peak tourist seasons.
Online tickets are often the preferred option, as they typically include skip-the-line access
and allow for more flexible visiting times. Booking in advance also helps ensure
guaranteed entry without unnecessary waiting.
Travelers who value convenience and time efficiency usually choose to purchase their tickets online
before arriving at the Basilica Cistern.
Purchasing tickets online is especially recommended during high season, holidays,
and busy travel periods in Istanbul.
How to Get to the Underground Basilica Cistern
The Basilica Cistern is located in Sultanahmet, the historic heart of Istanbul.
It sits within walking distance of major landmarks such as Hagia Sophia and the
Blue Mosque, making it very easy to reach.
🚋 Tram: Take the T1 Bağcılar–Kabataş tram line and get off at Sultanahmet stop. The entrance is just a few minutes’ walk away.
🚶 Walking: Easily accessible on foot from nearby attractions including Hagia Sophia, Blue Mosque, and Topkapi Palace.
🚕 Taxi: Ask the driver for “Yerebatan Sarnıcı”. The drop-off point is close to the entrance.
The entrance to the Basilica Cistern is clearly signposted and located
directly across from Hagia Sophia.
In addition to buying individual tickets or guided tours, many visitors choose an Istanbul city pass
to get the most value from their trip. Some passes include the Basilica Cistern,
while others focus on museums or transportation.
Below is a comparison of the most popular options to help you decide which pass best fits your travel style.
Inclusion policies may change, so always verify current benefits before booking.
City Pass
Basilica Cistern
Top Inclusions
Validity
Best For
Price
MegaPass Essential Recommended
✔ Included
Basilica Cistern
Hagia Sophia
Blue Mosque Guided Tour
Bosphorus Cruise
365 Days
First-time visitors seeking flexibility and must-see highlights
The Basilica Cistern is one of the most visited attractions in Istanbul,
welcoming hundreds of thousands of visitors annually.
Visitor numbers peak during spring and summer months, especially between April and October.
Early morning and late afternoon visits are generally less crowded.
Frequently Asked Questions About Basilica Cistern
What is the Basilica Cistern?
The Basilica Cistern is a 6th-century underground water reservoir built during the reign of
Byzantine Emperor Justinian I to supply water to the Great Palace of Constantinople.
Where is the Basilica Cistern located?
The Basilica Cistern is located in Sultanahmet, Istanbul, directly across from Hagia Sophia.
Its Turkish name is Yerebatan Sarnıcı.
How long does a visit to the Basilica Cistern take?
Most visitors spend approximately 30 to 45 minutes exploring the Basilica Cistern.
What are the opening hours of the Basilica Cistern?
The Basilica Cistern is generally open daily. Opening hours may vary on public holidays
or special events, so it is recommended to check in advance.
Is photography allowed inside the Basilica Cistern?
Yes, photography is allowed inside the Basilica Cistern.
However, flash photography and professional equipment may be restricted.
Do I need a ticket to enter the Basilica Cistern?
Yes, all visitors must purchase an entrance ticket to enter the Basilica Cistern.
Tickets can be bought online or directly at the entrance.
Is it better to buy Basilica Cistern tickets online?
Buying tickets online is recommended as it helps avoid long queues and often includes
skip-the-line access, especially during peak tourist seasons.
Do Basilica Cistern tickets sell out?
Yes, tickets may sell out during busy periods such as summer months, weekends,
and public holidays. Booking in advance is advised.
Are skip-the-line tickets worth it?
Skip-the-line tickets are worth it during busy hours as they significantly reduce waiting time,
especially in high season.
How much do Basilica Cistern tickets cost?
Ticket prices may vary depending on the season and ticket type.
Prices generally range from standard entrance tickets to higher-priced guided tours
or audio guide options.
Do I need a guided tour to visit the Basilica Cistern?
A guided tour is not mandatory. Visitors can explore the Basilica Cistern independently,
but guided tours provide deeper historical and architectural insights.
Are guided tours worth the extra cost?
Guided tours are worth considering for visitors interested in detailed historical context,
stories behind the Medusa heads, and Byzantine engineering.
How far is the Basilica Cistern from Hagia Sophia?
The Basilica Cistern is located directly across from Hagia Sophia
and is less than a one-minute walk away.
What is the nearest tram stop to the Basilica Cistern?
The nearest tram stop is Sultanahmet on the
T1 Bağcılar–Kabataş tram line.
From there, the Basilica Cistern is just a few minutes’ walk.
Can I visit the Basilica Cistern and Blue Mosque on the same day?
Yes, the Basilica Cistern, Hagia Sophia, and the Blue Mosque are all located
within walking distance and can easily be visited on the same day.
What is the best time of day to visit the Basilica Cistern?
Early morning or late afternoon visits are generally less crowded
and provide a more relaxed experience.
Is the Basilica Cistern crowded in summer?
Yes, the Basilica Cistern can be very crowded during summer months,
especially between late morning and early afternoon.
Is the Basilica Cistern suitable for children and elderly visitors?
Yes, the Basilica Cistern is suitable for children and elderly visitors,
although lighting is dim and some floors may be damp or uneven.
Basilica Cistern Tickets & Tours
The Basilica Cistern is one of Istanbul’s most visited historical attractions.
Entrance queues can be long, especially during peak hours and high season.
Booking your ticket online allows you to skip the line and enter smoothly.
