Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A mental health hospital dating back more than 139 years, now features a museum.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

The largest source of fossilized insects anywhere.

The highest bridge in America was built for an almost unnervingly small amount of money.

The narrow mountain road that carves a path between Florence and Victor is tied to ghost towns and ghost stories.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

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

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

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

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

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

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Victorian "Fancy Craft" Hair Wreaths and Relics.

Experience life in one of America’s smallest neighborhoods.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Small teepee-like houses built for TB patients have become sheds, studios, and bus stops around Colorado Springs.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

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