There's a town in northern Ethiopia called Lalibela. In this town are 11 "rock-hewn" churches. These churches are monolithic, meaning they are made from a single block of stone. They are usually hewn into the ground or into the side of a hill or mountain. Most of these were created in the 12th century.
This is a view looking down at the Church of Saint George.
(The same church is shown above from a different angle.)
We would love to take time during one of our trips to Ethiopia to see these stunning architectural masterpieces.
-Logan