Surreal riveted sea forts once protected the Kent shores from German attack.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

World's smallest skyscraper, the product of a remarkable con.

The fading, forgotten remains of a once bright and booming factory.

British Empire's last territorial expansion, claimed by four countries.

Believed to be the smallest castle in Europe.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This massive library holds what was once the largest book collection in the world.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

France's most famous cemetery, with some of its most curious tombs.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Internet rumors, often involving Icelandic singer Björk, have abounded regarding this isolated outcrop of rock.

This collection of unique liquids allows visitors to wander the waters of Iceland's glaciers.

An isolated, rusty phone booth commemorates Iceland's first international telegraph cable.

This chimerical bridge/tunnel appears to dead end right into the sea.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The quiet canyon has a tumultuous history involving a doomsday cult.

An offbeat angle on the ocean viewed through an antiquated lens.