Standing guard over the city of London for nearly 1,000 years, the formidable Tower of London has been a royal castle, a prison, a place of execution and torture, an armory and the Royal Mint. This program unlocks the doors to secret rooms, talks to the people who do the jobs no one sees and reveals some surprising facts about one of England's most famous icons.

Nepal, the birthplace of Buddha, is draped along the Himalayan Range between India and Tibet. It continues to attract travelers to this unique and beautiful Shangrila. Ian Wright's journey takes him from the traveler's mecca of Kathmandu, to the western reaches of the country and then on a popular trek through the mountainous regions. He ends his trip in Pulma, the most remote region of Nepal.

Unfolding like a political thriller, the film tells the story of the Iran hostage crisis, when 52 American diplomats, Marines, and civilians were held hostage at the American Embassy in Tehran on November 4, 1979.

Alexander Calder is the definitive portrait of the inventor of the mobile. This acclaimed film shows Alexander Calder at work in his studio, and features never-before-seen archival films and photographs. It includes contemporary shooting of dozens of works, seen as he meant them to be viewed, in dynamic motion.

Peggy Cappy returns with a new special that will show you how this gentle yoga program can help improve your strength and balance.

Easter Island has mystified the world ever since the first Europeans arrived in 1722. How and why did the ancient islanders build and move nearly 900 giant statues, and how did they transform a presumed paradise into a treeless wasteland, bringing ruin upon their island and themselves? Nova explores controversial recent claims that challenge decades of previous thinking about the islanders.

A revealing four-part documentary series from writer/director W. Kamau Bell offering a deeply personal exploration of Bill Cosby's descent from "America's Dad" to an alleged sexual predator. Exploring the complex story of Cosby's life and work, Bell invites comedians, educators, journalists, and Cosby survivors to have a refreshingly candid, first-of-its-kind conversation about the man, his career, and his crimes. Bell takes an unfiltered look at...

Art critic Waldemar Januszczak unravels the secrets behind eight masterpieces of European painting, searching out art experts, literary and artistic allusions, and historical records to expose long-held secrets within the gilded frames.

This six part series explores the influence on ancient culture on our lives today. Host Michael Wood visits the ancient cities and great ports of India and China, the deserts of Egypt and Iraq, the Mexico of the Inca, Aztec and Mayan peoples, the Greek and Roman monuments of Europe and the jungles of Central America searching for the living legacies of these once great civilizations. The series traces how the institutions that arose with urban civilization...

Today Impressionist art is found on T-shirts and mugs, but it wasn't always popular. London Sunday Times art critic Waldemar Januszczak hosts a lively guide to these revolutionary and influential artists, visiting their studios and the rustic vistas that inspired them. It's a super introduction to Monet, Manet, Degas, Seurat, Cezanne, Pissarro, Berthe Morisot, Mary Cassat, Van Gogh, and other greats.