The hallowed ground of one of the worst atrocities in United States history.

A Colorado store that specializes in all things spiritual, metaphysical, and witchy.

The first railway tunnel to cross the Continental Divide and, at 11,523 feet, was once the highest railroad tunnel in the world.

A tiny town’s tiny museum with some gigantic residents.

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

Take a self-guided tour through one of Colorado's most elevated mining districts.

This gallery is home to everything from antiques, to ancient tribal masks.

A riverside tiny house with books and other treasures galore.

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

The world's largest washing machine collection has more than 1,400 antique items in its exhibit.

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

Inside this shop, visitors are treated to a unique blend of natural history and art.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

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

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

This remote Colorado canyon is home to the second-largest collection of natural arches in the world.

This marker identifies the location where three states converge.

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

A coal fire has been burning underground here since 1896.

A small store filled with animal skulls and other curiosities.

It's easy to forget what century it is as you wander this rustic homestead.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.