Stone Churches of Lalibela

By far one of the most famous tourist attractions in Ethiopia. 

The following is a descriptive quote from Wikipedia: 

"Lalibela is a town in Amhara Region, Ethiopia famous for its rock-cut monolithic churches. The whole of Lalibela is a large antiquity of the medieval and post-medieval civilization of Ethiopia. Lalibela is one of Ethiopia's holiest cities, second only to Axum, and a center of pilgrimage. Unlike Axum, the population of Lalibela is almost completely Ethiopian Orthodox Christian.

Ethiopia was one of the earliest nations to adopt Christianity in the first half of the fourth century, and its historical roots date to the time of the Apostles. The churches themselves date from the seventh to thirteenth centuries. The layout and names of the major buildings in Lalibela are widely accepted, especially by local clergy, to be a symbolic representation of Jerusalem."