Formerly secret, precariously perched boulders.

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

There has been an astronomical clock on this spot since the 14th century.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

The birthplace of the builder of the Statue of Liberty is now a museum dedicated to his work.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

An ancient monastery, a locked room, and a mysterious book heist.