This elegant arc of a waterfall marks a religious turning point.

An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

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

Climb to the top of the world's largest seated bronze Buddha.

Large Hadron Collider and the Birthplace of World Wide Web.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

A shrine of fire worship built on top of a natural flame.

A gigantic collection of teeny, tiny books.

A collection of haunted objects and macabre oddities under one roof.

A land of debatable treasure.

The eerie ruins of an isolated abandoned town nicknamed "the Widowmaker" for its deadly gold mine.

A series of labyrinths in the Nevada desert inspire meditation and calmness.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

There's nothing creepier than a cemetery next to a clown motel.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.

Odd outsider art installations surround a Gold Rush-era ghost town.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

A tree planted by Marie Curie is treasured by the Radium institute that she set up.