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

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

This iconic science fiction house still looks like something from the future.

The largest dinosaur trackway in North America is tucked away among this canyon's ghosts and archaeological gems.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.

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

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

Even in death, he's still your huckleberry.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

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.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

The largest source of fossilized insects anywhere.

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

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

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

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

This spectacular track has run continuously since 1882.

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

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

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

The barrel-made lookout from Shackleton's final ship is tucked away in the crypt of one of London's oldest churches.