people walking on street near brown concrete building during daytime

The Hagia Sophia Grand Mosque / Ayasofya-i Kebir Cami-i Şerifi, with its innovative architecture, rich history, religious significance and extraordinary characteristics has been fighting against time for centuries, was the largest Eastern Roman Church in Istanbul. Constructed three times in the same location, it is the world’s oldest and fastest-completed cathedral. With its breathtaking domes that look like hanging in the air, monolithic marble columns and unparalleled mosaics, is one of the wonders of world’s architecture history.