page_title: Cistern of Aspar
section_title: Description
hierarchical_section_title: Cistern of Aspar / Description
caption_attribution_description: English: The park in the Byzantine-era Cistern of Aspar in November 2013
context_page_description: The Cistern of Aspar or Great Cistern, known in Turkish as Sultan Selim Çukurbostanı, was a Byzantine open-air water reservoir in the city of Constantinople.
context_section_description: The cistern has a square plan with a side 152 metres (499 ft) long covering an area of 23,100 square metres (249,000 sq ft): its average depth lies between 10 metres (33 ft) and  11 metres (36 ft). It could contain about 0.230–0.250 million cubic metres (61–66 million US gallons) of water. Its walls, 5.20 metres (17.1 ft) m thick  and partially still in place, were built using the Roman construction technique named opus listatum by alternating five courses of bricks and five courses of stone, an elegant pattern similar to that also used by the cistern of Aetius. On the inner walls are visible remains of arches, a fact which has led some to assume that the cistern may have been covered. The Cistern of Pulcheria is located near the Cistern of Aspar's southeast corner.
caption: The Cistern of Aspar in 2013
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