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

Central City celebrates its most famous madam by racing beds down Main Street.

A prehistoric rock shelter that's literally in someone's backyard.

According to local legend, a tree grew from the stake that killed this alleged vampire. In reality, he probably died from influenza.

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

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

Neal Cassady may still have an open tab at one of Denver's oldest watering holes.

Toss a Frisbee through the ruins of this Colorado gold mining town.

This sidewalk tribute honors Colorado's great culinary creation.

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

A river runs through this remote valley in a very unexpected way.

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

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

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

The remains of the dam that unleashed a 15-foot wall of water on Denver.

An annual festival celebrating Colorado's most famous frozen corpse.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Colorado's only true geyser is hidden within the San Juan National Forest.

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