Qasr al-Bint, “Girls’ Palace,” is the largest tomb façade at Mada’in Saleh with a height of 16 meters and is a group of 31 mainly adjacent tombs dating to as early as 31 AD. The complex of Mada'in Saleh was built by the Nabateans, who settled in this area of Saudi Arabia in the first century BC and whose capital city was Petra in Jordan.