Ad-Deerah
Al-Ula Heritage Village, also known as Ad-Deerah, is the traditional Arabian village where people of the oasis moved some 8 centuries ago and inhabited until the 20th century. It was built on a higher part of the valley in order to be clear from the floods that can occur during the raining season. At its maximum expansion the town contained over 1 000 houses that were built adjacent to one another thereby forming a wall around the town to defend the population.