Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

Nature's biggest mammal swims in landlocked Oklahoma.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

The world's only museum devoted solely to the art and collection of action figures.

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

An acoustic anomaly with a mysterious cause.

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

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

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

A mural of the Virgin of Guadalupe painted on the rock wall by canyon's religious namesake.

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

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

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

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

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

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

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.

A coal fire has been burning underground here since 1896.