The annual Islamic pilgrimage to Mecca in Saudi Arabia has begun. It’s required once in a lifetime by every Muslim who can afford it and is physically able to make it. The Hajj, one

Saudi Arabia has barred more than 269,000 people without permits for the annual Hajj pilgrimage from entering Mecca this week, authorities said, as the world's largest annual gathering of people has officially begun.

Millions of Muslims from all over the world have converged on Mecca in Saudi Arabia to partake in Islam's annual Hajj pilgrimage.