Where beautiful signs live on forever.

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

One of the largest, oldest, darkest, quietest motel rooms in the world.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

One of the best collections of antique printing machinery in the world.

One of the last free public hot springs is decorated with hippie art.

A natural gas leak provides a flickering flame beneath a waterfall.

A Prada store in the West Texas desert that is never open for business.

A whimsical village of unique treehouses resides in a Washington forest.

The most alien-looking place on Earth.

Intensely colorful calcite pools in Southern China.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

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

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

The fading, forgotten remains of a once bright and booming factory.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

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

One of the most remote spots in America and the first protected wilderness area in Nevada, named after an old legend.

This "common-as-dirt" museum celebrates the glory of normalcy.

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

The largest permanent Monopoly board makes one of the longest games even bigger.

The first museum in the United States dedicated entirely to posters.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

Where America's first doomsday cult awaited the end of the world.