The cinder cone volcano with a less than complimentary name.

An artificial crater field that trained astronauts for lunar exploration.

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

The remains of this hell for leather wild west town can still be found in the Arizona desert.

A stealthy Apache hideaway that became the haunting site of a mass grave.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

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

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

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

The U.S. Air Force has an anti-satellite laser weapon.

An abandoned amusement park based on the popular 1940s Red Ryder comic strip.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

"I did this all while you were watching TV."

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

One of the few surviving Panama Canal steam shovels stands outside a tiny Colorado mining museum.

An annual festival celebrating Colorado's most famous frozen corpse.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

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

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

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

Victorian "Fancy Craft" Hair Wreaths and Relics.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.