Basilica Cistern, also
called the Yerebatan Sarayi
or Yerebatan Sarnici, is the
largest of several hundred ancient cisterns that still lie beneath
the city of Istanbul, Turkey.
cathedral-sized cistern is an underground chamber of 140 by 70
metres, capable of holding 80,000 cubic metres of water. The large
space is broken up by a forest of 336 marble columns each 9 metres
the far end of the Cistern, there are two heads of Medusa which are
put upside down or horizontal. The Medusa Heads are taken from an
ancient Pagan site but they complement the pillars very beautifully
and add a different taste to the building.