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

See six states from the newly restored 100-year-old historic roadside attraction.

This museum and former department store is home to the largest collection of A.R. Mitchell art in the world.

A pair of gargoyles peer into unsuspecting passengers at Denver’s conspiracy-packed airport.

A unique auditory experience right on the sidewalk.

This swanky speakeasy is Denver’s oldest bar—and hasn’t changed a bit since 1933.

The warmth and creative kitsch of a quilt engulf every patron who visits.

This drive-by, rotating mini-gallery is nestled in the suburbs of Colorado.

One of few remaining antique carousels with stationary animals in the U.S.

The final resting place of a 19th-century gold prospector and convicted cannibal.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

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

This sidewalk tribute honors Colorado's great culinary creation.

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

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

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

A multiversal transit station located right below a highway interchange.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

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

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

In the 1950s, two women saved this grand theater in the Colorado mountains from demolition.

The final resting spot of the Colorado Transportation Department's beloved unofficial mascot.

This small piece of railroad history sits behind the parking lot of a chain grocery store.