Hagia Sophia is probably one of the main masterpie...

Hagia Sophia is probably one of the main masterpieces of Islamic architecture. The mosque has a very rich history and is a very complex structure with lots of different rooms and spaces for different activities. It is also very high. There's a way to get on the second floor inside and see the ground floor from new angle. It's under renovation, so hopefully soon we'll see it in new light.