A tribute to Loveland’s most famous sweethearts, who helped spread cupid’s message to millions.

A remote sandstone plateau named for a legendary cattle rustler.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

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

The remnants of the base where US Army troops learned how to fight in extreme conditions.

An innovative local park built from an abandoned sewage treatment plant.

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

This small piece of railroad history sits behind the parking lot of a chain grocery store.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

A hotel with a rich Wild West history of miners and bootleggers.

The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

One of the few surviving Panama Canal steam shovels stands outside a tiny Colorado mining museum.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

This restored farmhouse is a time capsule of a 19th-century Colorado homestead.

This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

A coal fire has been burning underground here since 1896.

The final resting spot of the Colorado Transportation Department's beloved unofficial mascot.

A museum of natural history, Edwin Carter's original log cabin home and workshop houses taxidermy specimens.

Paleoamericans built these ancient walls high in the Colorado Rockies as part of an extensive hunting system.

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

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.

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

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.