One of the smallest towns in the United States.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

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

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

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

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

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

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.