The Hagia Sophia anchors the Old City of Istanbul ...

The Hagia Sophia anchors the Old City of Istanbul and has served for centuries as a landmark for both Orthodox Christians and Muslims. Built in 537 AD (Yes, no typo!), it is a unique symbol of being a mirror for the tumultuous change of religious empires in Turkey over the past 1500 years. It is a true representative of the flavour of Istanbul and an architectural marvel