Meet Rita the Rock Planter, one of Danish sculptor Thomas Dambo's enormous wooden trolls.

This Rocky Mountain mansion was the luxurious home of the authoritarian leader of a company town.

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

Once named the “world’s oldest gas station” due to its unusual construction material.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

A surprising collection of bronze faces beneath a bridge in Loveland.

Colorado's only active volcano last erupted around 4,000 years ago.

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

This Colorado fire station has been in continuous operation for more than a century.

The giant stump of the once towering cottonwood where Ute people held tribal meetings.

Historic, 19th-century wagon wheel ruts cut into soft volcanic ash.

The home of a formerly enslaved man who went on to become a prospector, entrepreneur, and activist for Black rights.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

A tiny nondenominational church harkens back to the days of the first homesteaders in the region.

An ADA-accessible trail and deck offering stunning views of Colorado’s Mount of the Holy Cross.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

Take a dip in the world's largest mineral hot springs pool.

This marker identifies the location where three states converge.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

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