Istanbul (4/6)
At the end of May 2002 I had the chance of a short break in Istanbul. This was my first visit to Turkey.
Next day we visited the Basilica Cistern. This was built as an underground water storage reservoir AD 542, about 140m long, 70m wide with a capacity of 100 000 tonnes of water. The ceiling (and that area of the city above!) are supported by 336 columns each 9m high. No longer used for water storage for the city the water level is kept low and fish were introduced in 1994.