Hagia Sophia
The Crown Jewel
For nearly a thousand years, it was the largest cathedral in the world. Later a mosque, then a museum, and now a mosque again, Hagia Sophia is the very definition of Istanbul's layered history. Its massive dome seems to float in the air, a feat of engineering that baffled architects for centuries.
Why You Must Visit
- Witness the stunning fusion of Christian mosaics and Islamic calligraphy.
- Stand beneath one of the world's most impressive domes.
Pro Tip
Visit on a weekday morning to avoid the long queues. Dress modestly as it is an active place of worship.