Basilica Cistern

Constructed in the 6th century during the reign of Byzantine Emperor Justinian I, the Basilica Cistern, known as Yerebatan Sarnıcı in Turkish, is the largest surviving ancient water reservoir in Istanbul. The structure measures approximately 138 meters in length and 65 meters in width, covering a total area of nearly 9,800 square meters. It was designed to provide water filtration and storage for the Great Palace of Constantinople and later for the Topkapı Palace, with water supplied through aqueducts from the Belgrade Forest. The ceiling is supported by a forest of 336 marble columns, arranged in 12 rows, most featuring Corinthian or Doric capitals. A notable feature is the pair of Medusa heads used as bases for columns in the northwest corner, likely repurposed from late Roman monuments. Today, the site functions as a major museum, offering visitors a walk through its cool, dimly lit corridors reflecting centuries of history.

Nearby cities

Istanbul

Istanbul is the largest city in Turkey, spanning across two continents, Europe and Asia.

Arnavutköy

A vast district in northwest Istanbul, famous for its Black Sea coastline and the new international airport.

Yalova

Yalova is a green coastal city famous for its healing thermal springs, lush arboretums, and beautiful botanical gardens.

Princes' Islands (Büyükada)

The largest of the Princes' Islands, a car-free sanctuary featuring grand Ottoman-era wooden mansions and lush pine forests.

History & landmarks

Hagia Sophia

An architectural masterpiece in Istanbul that served as both a church and a mosque throughout its long history.

Blue Mosque

A historic mosque known for its striking blue İznik tiles that decorate the interior.

Topkapı Palace

Once the magnificent main residence of the Ottoman sultans, the palace now houses an impressive museum.

Grand Bazaar

One of the largest and oldest covered markets in the world, located in the heart of Istanbul's old city.

Galata Tower

A historic stone tower in the Beyoğlu district, offering sweeping panoramic views of Istanbul's Golden Horn.

Maiden's Tower

An elegant tower on a small island in the Bosphorus, boasting a long history of legends and myths.

Dolmabahçe Palace

An opulent palace on the shores of the Bosphorus, which replaced Topkapı Palace as the main residence of the Ottoman sultans.

Bosphorus Bridge

An iconic suspension bridge that connects the European and Asian parts of Istanbul.

More places

Gülhane Park

A historical urban park in Istanbul that was once part of the Topkapı Palace gardens, now offering a green oasis.

Yıldız Park

Once the royal hunting grounds of the Ottoman sultans, this huge park now offers picturesque walkways and old pavilions.

Miniatürk

An impressive miniature park in Istanbul featuring detailed replicas of the most famous buildings from Turkey and Ottoman history.

Isfanbul Theme Park

A large amusement park in Istanbul offering roller coasters, shopping centers, and entertainment for the whole family.

Emirgan Park

A historical park on the Bosphorus, world-famous especially for its annual tulip festival in spring.

Belgrad Forest

An extensive mixed forest in the northwest of Istanbul, serving as an important source of fresh air and recreation area for the city.

Port of Ambarlı

The Port of Ambarlı in Istanbul is the most important hub for Turkey's maritime trade.