A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

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

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

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