This 19th-century ranch is being transformed into a residential library with thousands of books about the natural world.

Two creeks flow out of either end of this canyon in opposite directions.

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.

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

Happen to come across a dead eagle? Send it to America's official dead eagle warehouse.

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

Toss a Frisbee through the ruins of this Colorado gold mining town.

A river runs through this remote valley in a very unexpected way.

A prehistoric rock shelter that's literally in someone's backyard.

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

Unlike most arches, this geological oddity formed in a volcanic dike.

The remains of an early 1900s dude ranch that operated until the 1970s.

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

A fake mine that was made using real mining techniques which is also used as a community center.

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

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

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

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.

The remains of the dam that unleashed a 15-foot wall of water on Denver.