One of the marvels of Armenian architecture is the carefully restored Akdamar Kilisesi. It's perched on an island 3km out in Lake Van. In 921 Gagik Artzruni, King of Vaspurkan, built a palace, church and monastery on the island. Little remains of the palace and monastery, but the church walls are in superb condition and the wonderful relief carvings are among the masterworks of Armenian art.
If you're familiar with biblical stories, you'll immediately recognise Adam and Eve, Jonah and the whale (with the head of a dog), David and Goliath, Abraham about to sacrifice Isaac, Daniel in the lions' den, Samson etc. There are also some faded frescoes inside the church.