These aggressively sustainable art homes look like something out of 1970's science fiction.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Dig for your own trilobites in this goldmine of invertebrates.

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

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.

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

One of few remaining antique carousels with stationary animals in the U.S.

A seven-story 1920s mausoleum outside Denver houses thousands of remains.

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

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

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

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

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

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

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

Abandoned silver mine strewn with wrecked and twisted structures.

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

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

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

One man's extraordinary topiary garden in a small South Carolina town.

One of the oldest living oak trees in the Southeast.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.