For more than 1,400 years, Mecca has been the most significant holy place for Muslims in the world. On their yearly journey to Mecca, known as Hajj, Muslim pilgrims from all over the globe make their way to this location. Non-Muslims are no longer authorized to enter Mecca as of today.
It is the pilgrimage to the holy city of Mecca in Saudi Arabia, also known as the Hajj, which every adult Muslim is required to do at least once in his or her lifetime. It is also known as the Adjdj or Hadj. The hajj is the fifth of the essential Muslim rituals and institutions known as the Five Pillars of Islam, which are comprised of five fundamental Muslim activities and institutions.