Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

Pennsylvania's own Roswell-style UFO mystery.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

A pub that is literally in the middle of nowhere, but continues to do business.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.

Ukrainian defense contractor's center for studying "pyramid energy."

Small French town or alien garage?

Ancient Peruvian fertility temple or modern money-making hoax? Either way these monoliths still look like penises.

Tiny pyrophyllite spheres from 3 billion years ago.

French commune at the heart of conspiracies.

The largest known medieval map of the world.

Beasts and branches swirl in sandstone carvings, interrupted by one strange creature.

Two monstrous faces loom over a village in Czechia.

This cramped crevasse saw the entire population of its island suffocated inside its depths.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

One part local history, 99 parts gruesome haunted house.

Eighteen miniature death-scene dioramas.

The largest wax museum in the southern hemisphere features a grizzly chamber of horrors.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

Mysterious man-made rock piles form an ancient cemetery on this rocky beach in Norway.

Pop culture has helped to keep this iconic British building from being destroyed.