A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

A giant bug impaled on a 75-foot-tall needle.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Artists and musicians now rule over this former rail station.

Ship-sized kinetic sculptural fantasy.

This one has sailed five times as far as Sir Francis Drake's famous ship.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

A naturally mummified 2,000-year-old man.

A cluttered and astounding collection of antiquities and curiosities.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Playable, historic pinball machines fill this Alameda museum.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

One of the most unusual geological features, recognizable from a dozen hit movies.

The liveliest ghost town in the state.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

A hand-built folk art installation covered with messages of God's love.

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

A little sculpture with a large wardrobe.