Lalibela (Amharic: ላሊበላ) is a town in Amhara Region, northern Ethiopia famous for monolithic rock-cut churches. The whole of Lalibela offers an exceptional testimony to the medieval and post-medieval civilization of Ethiopia. Lalibela is one of Ethiopia's holiest cities, second only to Aksum, and a center of pilgrimage. Unlike Aksum, 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, and are traditionally dated to the reign of the Zagwe dynasty king Gebre Mesqel Lalibela (r. ca. 1181–1221 AD).