Behind the gates of the world's most impressive castles, houses and mansions are secrets waiting to be revealed.
Tour a fortress in Scotland where a 15th-century power struggle came to a climax, an Italian villa that housed a mysterious manuscript and a New York estate that was home to a Secretary of State.
Visit the ancient ruins of Urquhart Castle that overlook Scotland’s Loch Ness, an English country estate that became the subject of a inheritance dispute -- plus, more castles.
Visit a British manor house that inspired the revival of a literary hero, tour a sprawling New York mansion and explore a German castle that served as a prisoner-of-war camp.
Tour an ancient German castle with a centuries-old secret about a mysterious feral child, visit England's iconic Tower of London, and explore an impenetrable bastion in the South of France.
In this episode of Mysteries at the Castle, visit a German castle that was the site of a gruesome 17th-century experiment, tour the home of a cursed aristocrat, and inspect an isolated French fortress.