The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

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

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

This super steep hike ascends 2,000 feet in less than a mile.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Step into the cool deep past and unknown future of who begat who.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

Hidden high on a remote mountain peak is a humbling and mysterious Vietnam War memorial.

Possibly the world's only drive-in movie theater with an attached motel.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

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

When ecosystems collide in the arid Southwest.

Half of a waterfall goes into the river while the other half seems to disappear.

A gallery of underwater art that can be visited by man and fish alike.

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.