Clive Anderson takes a humorous look at the contradictions and confusions of present-day China as he makes his way from Hong Kong, via Shanghai, Beijing and the Great Wall, to end up in Ulaan Baatar in Mongolia.

Finally, in South Africa, Rian Malan escapes riot-torn Cape Town and makes his way across the country to Johannesburg, talking to people of all races and wrestling with South Africa's violent past and increasingly ominous future. He ends his journey amid the bizarre splendour of the Palace of the Lost City hotel in Bophuthatswana.

Former Kirov prima ballerina Natalia Makarova explores the railways of Russia, taking in Volgograd, Samarkand and the river Volga, and dancing on the railway itself

In South America Lisa St Aubin de Terán travels from Santos on the coast of Brazil, near Sáo Paulo, over the mountains and plains of Brazil to the Pantanal Swamp, a wilderness of lush vegetation, and on to the city of Santa Cruz, home of the cocaine barons in Bolivia. She vividly describes the contrasts of beauty and poverty which she finds in the two countries.

In Pakistan, Mark Tully journeys from Karachi in the south to the Khyber Pass on the Afghan border in the north, making a diversion to travel to Quetta via the spectacular Bolan Pass on one of the most challenging lines built by British engineers anywhere in the world.