An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Oddly shaped rock formation, misassociated with a nearby utopian community.

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

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

A small flooded ghost town with a few scattered structures remaining.

This amazingly preserved Gold Rush town is a historian's dream.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

New fungal and bacterial species call this deadly lake home.

Grandpa Rainbow felt the neighborhood needed some color, so he picked up a paintbrush and went to work.

Supposedly Satanic numbers adorn this preserved submarine sail.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

A mysterious taxidermy man-beast of the seven seas.

A fine, large-aperture telescope available for public use.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Hollowed out cedar log tubs set in an ancient towering forest.

A volcanic fissure over two miles long and up to 70 feet deep.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

The Twisted Trees of Alticane are an unnerving grove of Quaking Aspen, apparently mutated from a single source, giving them a twisted and unnatural appearance.

The largest greenhouse in the world is home to over one million types of plants.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Jail from the 19th century that was built by inmates.

Small Nevada town embraced its designation as the "Armpit of America" with an Old Spice-sponsored festival.