This roadside stop between Goblin Valley is the perfect location to view some of the region's natural wonders.

What's a diner from the 1939 World's Fair doing in a remote Utah mountain town?

A Mars simulation in the southern Utah desert.

The fifth-longest natural arch in the world, and the longest outside China.

The largest island on the great salt lake is home to curious creatures and strange stories.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

Come for the speed, leave in love with the desert.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Dig for your own trilobites in this goldmine of invertebrates.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

When ecosystems collide in the arid Southwest.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The largest self-built castle in the U.S., six decades in the making.

This naturally-sourced hot spring is now home to a clothing-optional resort.