The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

One part local history, 99 parts gruesome haunted house.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

A monument celebrating the idea of reaching inaccessible places.

Climb to the top of the world's largest seated bronze Buddha.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The first declared National Monument in the United States.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

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

Giant granite rocks standing end-to-end like a train of circus elephants.

Erosion and time have created a naturally-formed water park.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Less a museum than a bizarre fantasy world created by artists and engineers.

This is not your typical jungle gym.