The ancient Galata Tower is 9 stories high with restaurant on top, and is a must see in Istanbul. Check out our article: Galata Dining: 10 Restaurants in Istanbul’s Trendy Neighbourhood on The Culture Trip:
Byzantine design AD) at the Kariye Museum (Turkey). Adorned with mosaics and frescoes that were created in the century and illustrate the lives of Christ and the Virgin Mary. Rivalled only by mosaics adorning churches in Ravenna, Italy.