Mada'in Saleh, also called "Al-Hijr" or "Hegra", is an archaeological site located in the Sector of Al-`Ula within Al Madinah Region, the Hejaz, Saudi Arabia. A majority of the remains date from the Nabatean kingdom. The site constitutes the kingdom's southernmost and largest settlement after Petra, its capital.
The Prophet's Mosque is a mosque established and originally built by the Islamic prophet Muhammad (Peace be upon him), situated in the city of Medina in the Hejazi region of Saudi Arabia. It was the third mosque built in the history of Islam, and is now one of the largest mosques in the world.