Bettany Hughes visits seven places important to the history and contemporary practice of Buddhism and meets Buddhists who explain concepts important to the belief system, including dharma, karma, samsara, Zen and nirvana. Her journey takes her to ancient sites including Angkor Wat in Cambodia and the Boudhanath Stupa in Kathmandu, Nepal, as well as more recent constructions such as the giant Tian Tan Buddha in Hong Kong