Where is Mecca and What is Hajj?
Mecca is the holiest place in the Islamic religion because it's the hometown of Islam's Prophet Muhammad and the place where he states that Allah revealed their holy book, the Koran, to him. Mecca has been the most important religious site for Muslims for 1,400 years. It's the destination of Muslim pilgrims from all over the world during the annual pilgrimage known as Hajj. Today, no non-Muslims are permitted to enter Mecca.