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

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

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

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A wall of chewing gum moonlights as collective art.

Berlin's old airport.

Metro station with a claim to rock n' roll fame.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Race through the maze, get your name on the sign.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Town of spiritualists and mediums in Florida.

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

Cold war icon and onetime "hole" in the iron curtain.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

The magic's in the hole!

Commonly acknowledged as the only public monument to the Devil himself.

Futuristic apartment blocks are the backdrop for Montreal surfers hangin' ten on the Habitat '67 standing wave.

A building so large that it has its own weather.

A circus legend leaves an unexpected endowment.

Apartment complexes built into huge repurposed natural gas tanks.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

An electrical pylon under whose legs a normal gauge train can run.

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