“It's the quality” (but probably also the drive-through donut tunnel) that has attracted diners since 1968.

This mysterious and creepy location instills a strong sense of foreboding in all visitors.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

A fake town founded by Western movie stars is now becoming a hip desert community.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

The Los Angeles flood disaster that took 400 lives and ended the career of William Mulholland.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

The only road through the heart of Glacier National Park.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A statue in the Texas town that proudly calls itself the killer bee capital of the world.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A tiny survivor of the Donner Party disaster.

A remote crossroads honoring a fallen talent.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A massive volcanic plug is now a protected area that hosts a number of bird species.