Karl Pilkington's journey begins in the Far East. As well as casting his verdict on The Great Wall of China, he immerses himself in the culture with laugh-out-loud results.

This week, Karl Pilkington's voyage takes him to Petra in Jordan, by way of Israel. What will he make of the 'rose-red city half as old as time'?

Karl travels to Mexico where he pays a visit to Chichen Itza. He also tries his hand at wrestling, learns how to become a cowboy, and hunts for a Mexican jumping bean.

Karl Pilkington's journey continues in Egypt, where Ricky Gervais and Stephen Merchant have arranged for him to sample the local culture. He tastes delicacies including rabbit meat, takes a boat ride down the Nile and is entertained by a belly dancer, before visiting the pyramids

Tag along with Karl Pilkington as he takes up temporary residence in Rio de Janeiro. On his way to Christ the Redeemer, he experiences a back wax and Brazil's famous beaches.

Reluctant explorer Karl Pilkington visits Peru, where he is unhappy with the Amazon jungle's toilet arrangements, and fails to impress a local tribe with his hunting skills. Arming himself with oxygen, the Mancunian then sets off on a high-altitude, eight-hour trek to witness Machu Picchu, the fortress city of the ancient Incas.

Reluctant globetrotter Karl Pilkington is reunited with Ricky Gervais and Stephen Merchant to reflect on his journeys to the seven wonders of the modern world, considering whether travel has truly broadened his mind.