Over 1.3 million confiscated wildlife products fill this macabre menagerie of illegal animal specimens.

A research lab and hands-on museum where visitors can experiment with retro technology.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

Unlike most arches, this geological oddity formed in a volcanic dike.

There are eight natural springs around town, each with a slightly different taste.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

When this 160-year-old church was being built, a stonemason included a hidden homage to his late daughter.

This enigmatic building features numerous architectural styles.

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

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

The site of the gruesome massacre—and maybe cannibalism—of five men, a tragedy that made Alferd Packer infamous.

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

This fully restored synagogue explores the American Jewish experience along the old frontier.

Only a few signs remain of the buried Colorado mining town that supplied the uranium for the first atomic bomb.

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

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

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

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

A remote sandstone plateau named for a legendary cattle rustler.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

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