Six experts set out in search of some of New York's most remarkable hidden stories. Why guests can't go up Lady Liberty's torch; What's behind the famous 21 Club's secret door; how the city's top tourist attraction put cowboys out of work.

Five experts go searching for some of San Francisco's most remarkable and surprising secrets. An exploration of little-known stories behind San Francisco landmarks and locations, including its golden fire hydrant and Dutch windmills.

Highlighting some of the most amazing stories from London that has never been heard before. A unique tour of London explores objects with secret histories, including its black cabs, the Marble Arch and the Horse Guards Clock.

A unique tour of Berlin hunts for little-known stories hidden in the city's famous landmarks, obscure sites, and even in the food.