The remains of a Canadian train crash are now mouldering beneath layers of rust and graffiti.

Historic psychiatric asylum and most-filmed location in the Great White North.

A toxic ghost town sitting atop a massive coal fire.

This massive library holds what was once the largest book collection in the world.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The fairy tale castle of the "fairy-tale king."

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

France's most famous cemetery, with some of its most curious tombs.

These fantastically named natural pools look like something out of a Scottish myth.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

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

The mummified relic of St. Antoninus.

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

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

Architectural monsters are devouring this palace's every door and window.

The final resting place of the poets Shelley and Keats.

This notorious Canadian mental institution was home to some of the first LSD experiments and origin of the word "psychedelic."

This mineral lake known for its healing powers is so buoyant it's been dubbed the "Dead Sea of Canada."

Two provinces and two territories touch borders deep in the middle of the wilderness.

These little-known sands dunes are a geological anomaly in Saskatchewan's southern prairies.