Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

One of the largest caves in the world open to the public.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Every inch of this chapel is covered in craftsmanship from across the world.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

Commonly acknowledged as the only public monument to the Devil himself.

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

Natural cathedral designed by Italian artist Giuliano Mauri.

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

A student driver's nightmare.

A musical instrument played by the sea.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Humble beginnings for one of the world's most famous scientists.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

The largest of London's subterranean rivers and once a mad, bad center of London life.

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

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

A dead saint, a deadly poison, and a mysterious holy ooze.

Geometry and mystery come together in an epic show of octagonal masonry.

A petite white lighthouse perched on the ancient core of Stromboli Volcano.

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

Renaissance villa and gardens complete with a tormented colossus.