The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

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

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

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

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

A collection of over 15,000 zines works to preserve DIY publishing culture.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

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

When ecosystems collide in the arid Southwest.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

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

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

Sculptures, jams, and the wild west collide at this folksy retreat.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

Grapes be damned, this distillery makes wine from apples, blueberries, cranberries, and more.

This colorful theme park dedicated the official fruit of Maine serves sweet, tasty treats.

This interpretive path lets you get up close and personal with dinosaur bones.

Metal water storage tank turned ethereal concert hall.

Historic seaside park featuring explorable, abandoned military structures.

A unique collection of more than 250 rocks and minerals located on a university campus.