This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A tiny island is connected to the mainland by a private railway that residents travel in their own personal wagons.

On a small Slovenian island, diners can mix and match a classic cake into dozens of sweet and savory flavor combinations.

The world's first hotel built in an abandoned water-filled quarry.

Giant animal sculptures are created with the rice straw leftover from the fall harvest each year.

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

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

This wrecked airplane has been sitting on a black sand beach since the 1970s.

This abandoned stepwell is one of the largest, deepest, and certainly one of the creepiest in India.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

The tallest outdoor elevator in Europe rockets passengers on a dizzyingly precarious ride to the top of a mountain.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

A historic observatory precariously perched at the "Top of Europe."

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

Stunning examples of Russia's 18th-century wooden architecture.

Dr. Strangelove-esque tours reveal the inside a bunker once reserved for Stalin himself.

The most southerly spot on New Zealand's South Island is home to surreally shaped, permanently mangled trees.

Legends surround this jagged rock formation in the New Mexico desert.

A Franco-era dam flooded (almost) everyone out of this centuries-old Aragonese town.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

A decommissioned submarine base makes a great space for graffiti art.

The oceanic dumping ground where spaceships go to die.

Final resting place of Antarctic explorer Ernest Shackleton.