An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

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

The largest self-built castle in the U.S., six decades in the making.

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

This massive home was constructed by one of the greatest conservationists in Colorado history.

This iconic science fiction house still looks like something from the future.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

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

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

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

Paleoamericans built these ancient walls high in the Colorado Rockies as part of an extensive hunting system.

The temporary burial site of the man who shot and killed Jesse James.

This naturally-sourced hot spring is now home to a clothing-optional resort.

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

A fake mine that was made using real mining techniques which is also used as a community center.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

An eatery within the Minneapolis American Indian Center writes colonial ingredients out of the story of Native American cuisine.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

Historic cuisine meets fine dining in a hotel-restaurant overlooking Hyde Park.