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

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

Happen to come across a dead eagle? Send it to America's official dead eagle warehouse.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

A famous flea market artist's studio that's full of odds and ends.

A sprawling collection of over 106,000 toys from around the world.

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

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

A reproduction of earth's many biomes.

Limestone caves with spectacular showcase chambers.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

These giant metal horses graze on a hilltop near the Montana highway.

One man's ambition created this psychedelic log home.

Only intact Ichthyosaur skeleton in the United States.

Rippling sand dunes frozen in the Arizona rock.

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

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

A sculpture for the sun and stars, created by Nancy Holt.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

In the heart of Brigham Young's promised land sits a festering plot of industrial ruin that has been claimed by society's outcasts.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

Where unreadable addresses are read, 24 hours a day, seven days a week.

The first hand-illuminated, hand-written bible since the invention of the printing press.