This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Home to the "Rat King" of Nantes and other wonders of the natural world.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

The oldest operating pharmacy in the world features 800-year-old recipes.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.