This 19th century jail was mainly used to incarcerate the drunk and disorderly.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

The largest source of fossilized insects anywhere.

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

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

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

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

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

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

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

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

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

Inside this shop, visitors are treated to a unique blend of natural history and art.

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

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

This statue of an obscure comic strip hero stands as a tribute to patriotic service and a cautionary tale about embracing fads.

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

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

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

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This museum offers an actual time machine back through Colorado's past.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

A downtown park built on top of unclaimed graves.