Sultanahmet Square and the Historic Peninsula
- Hagia Sophia: Built in the 6th century, this structure has served different purposes during the Byzantine and Ottoman Empires. Today, it is open to visitors as a museum.
- Sultan Ahmed Mosque (Blue Mosque): Built in the 17th century, this mosque is famous for its blue tiles that adorn its interior.
- Topkapi Palace: This palace, where Ottoman sultans lived for 400 years, now serves as a museum.
- Basilica Cistern: This underground water reservoir from the Byzantine era is known for its mystical atmosphere.