America's most famous piece of self-built architecture.

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

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Stairs often replace streets on the steep slopes of this old mining town.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

Limestone caves with spectacular showcase chambers.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

A reproduction of earth's many biomes.

America's only nuclear missile silo open to the public.

The remains of this rugged homestead ranch offer a brief glimpse into a bygone era.

The world's largest military aircraft cemetery.

Make a wish at what might be America's only Catholic shrine to a sinner.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

A rare wayfinding portmanteau of “Street” and “Avenue.”