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

This abandoned Antarctic research station is a Soviet ghost frozen in time.

This striking, two-toned confluence of rivers is visible from space.

These giant mummies are set ominously into a Peruvian cliffside and topped with real human skulls.

Fire meets ice at the southernmost volcano on Earth.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

Europe's only museum solely dedicated to the history of whaling still has a fully-functioning whaling ship.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

This Peruvian bone silo lined with hanging human skeletons and hundreds of skulls is topped with a remarkable Michelangelo replica.

This bone-filled cave got its name after they found 140 bear skeletons inside.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

No one knows who built this strange cave of worship or exactly why.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

This nostalgic Russian museum is full of USSR cultural artifacts from the 1970s and 80s.

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

Imagine playing a version of Legends of the Hidden Temple, but with a distinctly Southern Gothic flare.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

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