The entire length of the border is marked by a 20-foot-wide slash through the trees.

Canada's subterranean Cold War museum has doubled as a movie set.

This natural sea cave hides a small wonderland of natural turquoise beauty.

Willy Wonka would love this weird half-a-home.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

This massive underground salt mine now holds a sci-fi theme park in its depths.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

These strikingly barren, rolling red hills were caused by bad farming practices.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A special train service transported Sydney's dead from this station to "Necropolis Receiving Houses" at Rookwood Cemetery.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Medicinal spa created with the discharge from a geothermal energy plant.

A bizarre house filled with an astounding array of collections.

A toxic ghost town sitting atop a massive coal fire.