This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

A medieval weapon rumored to have been used by the brilliant poet himself.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

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

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

Drink wine handed out through a window as part of an age-old tradition.

Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

142 ceramic steps become a mosaic once a year.

The world's most active stratovolcano is almost always erupting.

Italian cave with exceptional acoustics and an unsavory history.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

The only place in America where anyone who wants can shovel coal aboard an antique train.

A mini Wrigley Field for mini baseball players.

The language and heritage of a nearly forgotten culture can still be explored in this Southern enclave.