Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

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

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Abandoned silver mine strewn with wrecked and twisted structures.

In 1869, Swiss and German immigrants settled in this small town in the mountains of West Virginia.

This university transit system is a 1970s vision of the future.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

This colorful, ornately-decorated cemetery sits next to a quiet cove known as "the beach of the dead."

Live chainsaw carvings of tiki statues aim to keep a tradition with ancient roots alive in this small Delaware town.

Once used as a deterrent to drinking alcohol.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Climb inside an iron crystal magnified 165 billion times its normal size.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Follow the original medieval paths that wind through this intriguing section of the city.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The largest self-built castle in the U.S., six decades in the making.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Hike, ski, or snowshoe to a backcountry yurt that serves up gourmet, four-course dinners.