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

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

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

These pillars at the main entrance of this church are actually a hidden musical instrument.

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

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

Southern Italy's spinning top village.

Started as a kitchen garden, now the second largest botanical garden in the world.

This monumental fountain has moved around the city multiple times.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This curious, round temple is the oldest still-standing marble building in Rome.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A little sculpture with a large wardrobe.

According to a local legend, this bridge was constructed by an astrologer with the help of the devil.

The summer home and later final residence of acclaimed American sculptor Augustus Saint-Gaudens.

A small chapel celebrating the spiritual bond between dogs and humans.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

Vermont's hills are alive with the sound of music at this historic hotel.

The quaint little Vermont town played a quaint little Connecticut town in Tim Burton's "Beetlejuice."

A 12,000-year-old bog boasting rare plants and fauna.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.