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Historic site · Alemdar Mahallesi (Sultanahmet), Fatih, İstanbul

Basilica Cistern

Yerebatan Sarnıcı · Yerebatan Sarayı

A vast 6th-century underground cistern in Sultanahmet, built for the Byzantine emperor Justinian I and now run as a museum by İBB Kültür A.Ş., the Istanbul municipality's cultural company.

Where it is

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41.0085, 28.9784

Why go

The Basilica Cistern, known in Turkish as Yerebatan Sarnıcı, is a rectangular underground hall about 140 m long and 70 m wide, with a stated capacity of 80,000 tons of water, according to its operator, İBB Kültür A.Ş. (İstanbul Büyükşehir Belediyesi's cultural company). It was built under the Byzantine emperor Justinian I (527–565) on the site of the earlier Stoa Basilica, which gives the cistern its name. Petrus Gyllius, a French naturalist living in Istanbul, is credited with rediscovering it for Westerners between 1544 and 1555 and recorded its 336 columns. Two Medusa-head blocks, reused as column bases in the cistern's north-west corner — one upside down, one on its side — were found during the municipality's 1985–1987 restoration and cleaning. The cistern opened to visitors as a museum in 1987 on a purpose-built walkway; after what Kültür A.Ş. describes as the largest restoration in its history, it reopened on 22 July 2022 and today also hosts temporary exhibitions, contemporary art and concerts. The cistern lies within the area of the UNESCO World Heritage property "Historic Areas of Istanbul" (inscribed 1985), but UNESCO's own description names cisterns only as a building type present in the property and does not name the Basilica Cistern individually, so it is not a World Heritage Site in its own right.

Getting there

Address, per the operator: Yerebatan Caddesi 1/3, Alemdar Mahallesi, Sultanahmet-Fatih. The operator's page does not publish an entrance coordinate distinct from the site's general location, and payment at the entrance is by card or İstanbulkart only, per the operator's listing read previously.

Accessibility

The operator's museum page does not mention accessibility, stroller use, step-free routes or age policy anywhere in its text, and the cistern's own dedicated site (yerebatan.com) was unreachable again today. None of this can be stated as fact; ask before visiting if you need a confirmed step-free or wheelchair route, or are travelling with a very young child.

Base yourself nearby

City

Istanbul

Istanbul is the city the Bosphorus divides between Europe and Asia, with the Golden Horn cutting into its European shore. Its Historic Areas (the Sultanahmet archaeological park, the Süleymaniye quarter, Zeyrek and the Land Walls) are a UNESCO World Heritage property inscribed in 1985, and a visit sorts naturally into the old city, the European Bosphorus shore around Beyoğlu, and Üsküdar and Kadıköy across the water.

Near Basilica Cistern

Related guides

  • Basilica Cistern guide: what you see, day and evening sessions, and the listed tickets

    The Basilica Cistern is Istanbul's largest covered Byzantine cistern, run as a museum by the city's culture company. This guide covers the 336 columns and the Medusa heads, the operator's separately priced day and evening sessions, what is unknown about stairs, strollers and children, and how the listed ticket options differ, including which showed no dates.

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