From assassins who plot to poison a Sultan to bitter enemies who sign the world's first peace treaty, discover the secrets inside the Topkapi Palace Museum.

From a dinosaur embryo that solves a murder mystery to a spacecraft catching a comet's tail, discover the secrets inside the American Museum of Natural History.

From Churchill risking his life in the Blitz to 21st Century soldiers who become invisible, discover the secrets inside the Imperial War Museum.

From ancient athletes who kick a severed head to a peasant dress that brings down an empire, discover the secrets inside the National Museum of Anthropology.

From Vikings who break unbreakable swords to curators who solve the world's hardest jigsaw puzzle, discover the secrets inside the Pergamon and Neues Museums.

From the alchemy of turning silver into gold to a dance craze that changed history, discover the secrets inside the Kunsthistorisches Museum.

From a dodgy archeologist who discovers a golden mask to an ancient gadget that reveals the future, discover the secrets inside the National Archaeological Museum.

From ancient mummies who sport tattoos to re-examining who really killed Rasputin, discover the secrets inside the State Hermitage Museum.