Yerebatan Palace (Cistern) Museum
It was built by Emperor Constantinus I during the 4th century nad was
restored and extended by Justinianus in the 6th century. The water came
from the Belgrad forest via the Cebeciköy arch. It is 141 m long and 73 m
wide. It has 336 pillars 5 m apart and 8 m high.