One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

An ancient cave system in Tennessee’s Appalachian foothills converted to a 1,200-person music venue.

This popular park is home to a sea serpent sculpture that now overshadows the twisted history of its creation.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.

A cheeky alleyway window hosts tiny rotating exhibits with outsized charm.

Giant novelty guitars now mark the spot where Robert Johnson is said to have sold his soul to the devil.

The only diamond mine in the world where you can keep what you find.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

This former Texas landfill is flush with 300 million-year-old fossils, all fit for the taking.

The cliff and rock formations are made out of Sioux Quartzite.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

A museum dedicated to the mysterious cryptid.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

Unlike most arches, this geological oddity formed in a volcanic dike.

There are eight natural springs around town, each with a slightly different taste.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.