Basilica Cistern (Yerebatan Sarnici) is a historic water cistern constructed by the Byzantine Empire. Engraved decorations exist over some of its 336 columns. It has a capacity of 80.000 m3 water.
The 6th-century church of Hagia Sophia that dominates the Istanbul skyline is one of the best known and most visited sites of the historic peninsula.
Head for the top of Galata Tower on a first visit to Istanbul to get a wonderful, elevated overview of the beautiful city
