At Jerash there is a cluster of three churches. This mosaic floor must have been extraordinary when it became part of St. John the Baptist in 531 AD. The Byzantine artwork features images of plants and animals and the representation of major Egyptian cities. Nearby are the Churches of St. Cosmos and St. Damian. Since 553 AD they have shared an atrium with a better preserved mosaic floor. Another dozen churches have been excavated at Jerash.