A building lost in the midst of a 5 000 hectare park, that's the equivalent of the surface of Paris, Chambord is the castle of all superlatives. Having required nearly 220,000 tonnes of stone to build, the Chateau de Chambord, in the Loir-et-Cher department, is an architectural gem. 156 metres of facade, it has more than 70 staircases, 282 fireplaces and 426 rooms. The castle commissioned by Francis 1st in the 16th century is also the most mysterious. The majestic monument has its share of mysteries: identity of its architect, influence of the Florentine painter Leonardo da Vinci in its design, location in the middle of marshes in the heart of the forest and even longevity because it has survived through time without being damaged since the beginning of its construction in September 1519.

A caving expedition recently discovered a community of dwarf crocodiles living in the Abanda Caves, Gabon. The crocs are living in pitch darkness, hunt bats and some have bright-orange skin. Part of the original team returns to find out more about this bizarre phenomenon. It's mission impossible to access the crocs world and there's no way of knowing what they might find.

Akira Kurosawa's lauded feudal epic presents the tale of a petty thief who is recruited to impersonate Shingen, an aging warlord, in order to avoid attacks by competing clans. When Shingen dies, his generals reluctantly agree to have the impostor take over as the powerful ruler. He soon begins to appreciate life as Shingen, but his commitment to the role is tested when he must lead his troops into battle against the forces of a rival warlord.

Isolated from the rest of the world since the time of the dinosaurs, New Zealand’s magnificent wildlife has been left to its own devices for 80 million years, with surprising consequences. This series reveals New Zealand’s rich and intriguing wildlife stories, from the bustling communities of penguins hiding away in giant daisy forests to the kakapo – Earth’s only species of flightless nocturnal parrots. New Zealand was also the last place to be discovered and settled by people who brought with them new animals, like merino sheep and new predators like the stoat. Finally the series meets the pioneering conservation heroes who are fighting to save some of its most endangered species.

A documentary of insect life in meadows and ponds, using incredible close-ups, slow motion, and time-lapse photography. It includes bees collecting nectar, ladybugs eating mites, snails mating, spiders wrapping their catch, a scarab beetle relentlessly pushing its ball of dung uphill, endless lines of caterpillars, an underwater spider creating an air bubble to live in, and a mosquito hatching.

Although first glance reveals little more than stones and sand, the desert is alive. Witness moving rocks, spitting mud pots, gorgeous flowers and the never-ending battle for survival between desert creatures of every shape, size and description.

It is believed that cats are just indifferent and egotistic; but they are more complex, interesting and even cuter than is commonly imagined. The astonishing process by which a newborn kitten becomes a fully grown cat reveals the amazing and true secret life of cats.

In between the original 1963 13 ASSASSINS film and the 2010 remake by Miike Takashi, Fuji TV produced a version for TV. Starring Nakadai Tatsuya and Natsuyagi Isao, with strong support from Tanba Tetsuro and Tanaka Ken, this is the ultimate tale of samurai justice carried out in a historical masterpiece. The shogun’s half-brother, Matsudaira Naritsugu has been slated to join the Roju Council of Elders as a senior adviser even though he is criminally insane. His outrageous acts cause one of his top retainers to commit ritual suicide in protest over his lord’s crimes. Alerted to these crimes, Roju Councilor Doi asks Inspector General Shmada Shinzaemon to assassinate Naritsugu before he can be seated on the council. Gathering a band of 13 (including himself), Shimada sets out on a death-defying journey to cut down the lord before he can reach Edo. Can a band of 13 samurai defeat the vile Naritsugu’s 200 man entourage and enact justice against his cruelty?

In the aftermath of the Fukushima nuclear disaster, a Japanese farmer ekes out a solitary existence within the radiation red zone.

The Finnish architect Alvar Aalto (1898–1976) is one of the great figures of modern architecture, ranked alongside Gropius, Le Corbusier and Mies van der Rohe. This film analyses Aalto’s uniquely successful resolution of the demands and possibilities created by new technology and construction materials with the need to make his buildings sympathetic both to their users and to their natural surroundings. His inventive use of timber in particular represents both a reference to the forest landscape of Finland and a building material that is ‘warm’ and extremely adaptable. Filmed in Finland, Italy, Germany and the USA, this documentary shows how the Finnish natural environment and art traditions were essential elements in Aalto’s pioneering harmonization of technology and nature.

Bas Jan Ader hangs from the branch of a tall tree, until he loses his grip and falls into a river below.

Hidden deep within the Pony Pasture Rapids Park of Richmond, Virginia there lives a creature whose ancestors span back a half a billion years. This short film explores the life history of an ancient species, Fairy Shrimp, that survive in harsh habitats here and around the world.

Research is underway at Virginia Commonwealth University to uncover the secrets of a charismatic, endangered species, the Atlantic sturgeon. This short documentary follows Dr. Matt Balazik as he discovers, for the first time, the sturgeon migration using acoustic transmitter tags.

An in depth look at the undersea life of dolphins

'Magical Imperfection' tells the inspirational story of world-renowned Canadian architect Raymond Moriyama. Imprisoned in his own country during the 1940s because of his race, Ray found the strength to combat injustice by devoting his career to social justice and equality.

Wild tigress, Machli, is one of three sisters raised in India's Ranthambore National Park. Their mother, "The Lady of the Lakes," ruled the lakeside territory, until Machli rose up and took possession of her mother's throne.

The compelling story of one of the most successful mountain gorillas that has ever lived - a huge silverback called Titus. The programme starts in 1967, when the researcher Dian Fossey first made contact with a group of mountain gorillas in Rwanda. She opened up a window on to their secret lives. Forty years on, this film reveals the complete and dramatic life story of one individual animal. Titus's father was murdered by poachers in front of his very eyes. His mother abandoned him in the subsequent chaos. His family disintegrated. He should have died. But we reveal how Titus survived against all the odds. Titus's present day trials and tribulations take the viewer back in time to reveal key moments in Titus's history. Using testament from eyewitnesses, the film relives one individual mountain gorilla's extraordinary battle for survival.