Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

Legend says train robbers stashed their gold within the depths of this unusual cave.

One of the first big sculptures anywhere in Australia.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The legendary building that needed ghostly approval before being built.

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

Elevated freight railway turned wildly successful urban park.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Most-visited and most-photographed slot canyon in the American Southwest.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Once swallowed by flood waters, this village has emerged as an eerie shadow of its former self.

The ruins of the "20-year town" lay out among the mountains of Alberta.

A well preserved medieval fortress in Vojvodina.

Ruins of a 10th century church tucked away deep in a botanical garden.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

A submerged archeological park still holds the wonders of a Roman Sodom.

Now an entertainment complex, the Lingotto building was once an avant-garde auto factory with a test track on the roof.