With thousands of Muslims undertaking the profound and sacred journey of Hajj, new convert Simon Peters explains the first pillar of Islam.
Two schooboys explain the second pillar, prayer, as thousands of faithful Muslims prepare for Hajj - the great pilgrimage to Mecca.
Hajj is the great pilgrimage to Mecca undertaken by thousands of Muslims. The third pillar, Zagat, is explained.
As thousands of devout Muslims prepare to undertake the holy journey of Hajj, Abdul Malik explains the fourth pillar.
The sacred duty of Hajj - the great pilgrimage to Mecca - is the fifth and final pillar of Islam.
It's the first day of Hajj, the Muslim pilgrimmage to Mecca - and Kosser, Serfraz and their fellow pilgrims must leave Mecca and head for Mina in the Saudi Arabian desert.
For the three million pilgrims this is the most emotional and powerful day of the Hajj. After sunrise, the pilgrims head to the Plains of Arafat to spend the day praying and asking God for forgiveness
The pilgrims have spent a cold night out in the open in the desert at a place called Muzdalifah, between Arafat and Mina.
Today the piligrims are required to throw tiny pebbles at a series of stone pillars to symbolise casting out the devil.
The final day of Hajj, and for Serfraz, Kosser and their fellow pilgirms it's time to leave the tented desert city of Mina and return to Mecca.
Five young people from around the world prepare to make the greatest trip on earth, Hajj - the annual Muslim pilgrimmage to Mecca.
Our five pilgrims have had a once-in-a-lifetime experience at Hajj. Or have they? This documentary, concluding Channel 4's unique coverage of Hajj, explores how they felt about the experience.