The pretty iron lamp is a reminder of the architecture underneath London's streets.

The gnarled remains of an exploded German bunker from World War II sit along a breathtaking fjord.

Get your cosplay on at Portland’s only Medieval fantasy-themed mead hall.

This unusual island has a winding sand bridge that only appears at low tide.

Once a safe haven for locals engaged in blood feuds, this 400-year-old fortified tower is now a museum showing what life was like for those lying in wait within its walls.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

Every summer, this shrine sets up a tiny drinking fountain reserved for thirsty apians.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

A stone wall commemorates the legend of a ferocious dragon who literally got his butt kicked by a knight.

The world's largest model of our planetary system.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

The largest collection of model trains in the world is actually run using full-size locomotive technology.

Houses are tucked between, on, and underneath giant boulders.

Where you can hail your favorite fictional commanders-in-chief.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

This spooky statue sits outside a famous Prague theater.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Eerie ruins of an abandoned medieval fishing village crumble atop an unforgiving stretch of earth.

One of the best-preserved medieval streets in Europe.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A stately castle in the northern Italian countryside has been restored after years of neglect.