These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This spectacular track has run continuously since 1882.

A wall of chewing gum moonlights as collective art.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

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

A clear blue swimming hole with hidden caves, still unexplored.

See massive fossils that are over 200 million years old in northeastern Arizona.

World-famous, Pink's still manages to keep its prized cult fetish status.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

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

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

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

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

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

The highest bridge in America was built for an almost unnervingly small amount of money.