One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

An architect's childhood fantasy treehouse made real.

The first declared National Monument in the United States.

A memorial dedicated to the victims of the Columbine High School shootings.

After being lost for nearly a century, this historic bell finally returned home after its mysterious theft.

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

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

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

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

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

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

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

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

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

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

A downtown park built on top of unclaimed graves.

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

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

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

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

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

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.