An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

A medieval tower with a suspended iron cage used as an open-air jail for criminals who were exposed as a warning.

This train station inspired the name of a 1970's rock band and provided the backdrop for their album cover.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

A face emerges from the landscape when seen from the air.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

A small house sits between two huge rocks, with its back to the sea.

This now abandoned arch bridge was constructed during the Great Depression.

A small museum dedicated to taking the taboo out of all things related to poo.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

A unique outdoor timepiece at a "clothing-optional" resort.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

An abandoned cable car station located on the Danube stands like a haunted house above the river.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

The charred, dead skeleton of an oak tree is said to have consoled a dying 16th-century Italian poet.

The wreck of a B-29 Superfortress now stands as a memorial left in the moors.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

A weathered, American Foursquare-style house originally built for lumber merchant William Wimsatt.

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.