Istanbul THE CAPITAL OF ROMAN EMPIRE and the largest city in

1). Hagia Sofia Grand Mosque Nestled in the Sultanahmet neighborhood, Hagia Sophia wears many hats once a church, then a museum, and now a resplendent mosque. Its walls echo with tales from the Roman, Byzantine, and Ottoman empires. 

2). Topkapi Palace Museum

3). Basilica Cistern: Mystical and awe-inspiring,