Locals perched on icy thrones brave frigid temperatures during this bizarre winter tradition.

The sunken structure looks like the victim of a catastrophic flood.

These red marks, seemingly placed at random, are in fact not.

This tiny hotel perched atop a 50-foot tower really puts things into perspective.

The steepest classic funicular in the world glides along a dizzying incline.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

A museum dedicated to the history of psychiatric treatment featuring a gallery of art made by patients.

Few would expect the world's oldest preserved oil refinery to be found in Sweden.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

The old fire station features a mural that has more to it than first meets the eye.

The first skyscraper to include a Ferris wheel built into the facade.

This cobblestoned medieval-style town was entirely constructed in the 1990s and 2000s.

A little-known sculpture park of contemporary environmental art in a Lapland forest.

An eclectic sculpture park rises atop a giant pile of ashes in Sweden.

A historic scientific breakthrough that crosses nine borders.

A Swedish town came up with an out-of-the-box way to eliminate the bloodthirsty insects.

Muammar Gaddafi's well-intentioned investment in his favorite city turned out to be a nightmare.

Enigmatic bug-like sculptures mystify drivers along a Swedish highway.

A forest of immensely tall and unusually straight oak trees planted nearly 200 years ago to build naval ships that never came to be.

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

This Minsk museum has cat coffee, cat chess, cat art, and even a cat "staff," which visitors are free to take home.

A unique park tells the geological history of Belarus in a national “map” of thousands of boulders and blue spruce.