The Ka'ba is the holiest site in Islam located in Mecca, Saudi Arabia. It consists of a large mosque which surrounds the area in a square shape. The Ka'ba is thousands of years old and has been around since the times of Abraham and Muhammad. Part of the five pillars of Islam is that a Muslim must make a pilgrimage or hajj to the Ka'ba once during there life. Almost two million Pilgrims visit the Ka'ba every day.