Colorful lights and mirror-like brine pools create trippy illusions within the historic mine.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

In the mountains of West Virginia is this perfectly preserved Art Deco train station.

Although it has never been a secret ninja base, this shrine still has plenty of tricks up its sleeve.

Constructed by forced laborers, this submarine pen is now a museum and war memorial.

Life-size figures portray depot attendants, train crew, and passengers frozen in time at the oldest railroad station in Arkansas.

A subterranean relic of the Spanish Civil War hides below this picturesque park.

This disused Cold War bunker has been restored to all of its early 60s glory.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

An abandoned village, frozen in time by the threat of a landslide.

The remains of a military communications outpost still stand on this Greek island.

Some believe that this ancient mural depicts technology far ahead of its time, but in reality it's nothing quite out of place.

This Cuban town sets the sky on fire around Christmas each year.

During the holidays, a vintage subway train whisks New Yorkers back in time.

An annual festival full of illuminated replicas of iconic landmarks from around the world.

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

Twice a year, this Orkney town hosts a rowdy game of medieval mob football.

This unique competition celebrates an American Indian and Canadian First Nation cultural tradition.

This small town's local tradition is to create the world's tallest ice pillar.

A statue of Paulina Hermann, the eccentric noblewoman known as the "mother of cats."

The only sea in the world that has no land boundary.

Atop this library is one of the most beautiful green spaces in Warsaw.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.