Hajj is the Fifth Pillar of Islam.
It is obligatory on every Muslim to perform it at least once in their lifetime, if they are physically and financially able.
This week-long event occurs Two Months and Ten Days after Ramadan end, during the Islamic month of Dhu-al-Hijjah.
Pilgrims wearing Ihram gather on the plains of Arafat. This is a reminder that all mankind will one day gather on the Day of Judgement when they will be presented to Allah (S.W.T).