An abandoned sawmill from more than 134 years ago stands testament to the ambition of one man.

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

The remnants of a 1970 plane crash remain high in the Rocky Mountains.

Check out a hidden collection of vintage neon signs.

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

A riverside tiny house with books and other treasures galore.

This enigmatic building features numerous architectural styles.

All that remains of this once-booming mining town are the ruins of a saloon.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

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

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

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.

A lively annual event in which thousands of people race to push coffins heavy with bodies up a hill.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

The final resting place of a 19th-century gold prospector and convicted cannibal.

The world's largest sticker ball weighs in at a mighty 231 pounds.

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

Inspired by a music box, a small town Vietnam vet carved an entire carousel full of animals by hand.

A mental health hospital dating back more than 139 years, now features a museum.

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

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

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

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.