Saudi Arabia - Madain Saleh is an old city in Saudi-Arabia. It is a sister city of Petra, built by the Nabateans more than 2000 years ago. It is located about 400 kilometres to the north-west of Medina and 500 kilometres to the south of Petra.
Doorway Into Casablanca--Doors into religious spaces are often grand, in honor of a holy place. Hassan II mosque in Casablanca, the largest mosque in the country & the 2 largest mosque in the world after the (Grand Mosque) of Mecca ^