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

Above Breckenridge, a destructive mining technique sits sunken in a small pond.

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

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

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

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

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.

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.

When ecosystems collide in the arid Southwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This super steep hike ascends 2,000 feet in less than a mile.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

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.

It's safe—and permitted—to walk across these twin natural sandstone arches.

This Moab institution functions as both a rock store and a small natural history museum.

A home covered with elaborate mosaic and other pieces of art.

A little-known hot spring haven right below the highway.

Abandoned silver mine strewn with wrecked and twisted structures.

This stunning Connecticut mansion is actually just a one-room-deep hoax.

Sand dunes from a glacial lake are preserved in this woodland park.

An artifact taken from one of America's shortest wars.