This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

The clock that sets them all.

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

See six states, pickled freaks, rocks, and antiques.

This Wild West attraction is probably more fiction than history, but that doesn't mean it's not awesome.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

One of the largest Masonic temples in the world, created at the height of the oil boom in ostentatious style.

Standing at 21-feet tall, this space cowboy adds to the legacy of Route 66's muffler men.

This marker identifies the location where three states converge.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

A Saint Nicholas-themed ghost town in the Mojave desert.