A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Made famous by cable TV, this oddball collection of antiques and collectibles is a cut above the rest.

A giant donut stands as a popular symbol of Los Angeles iconography.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

Take a monster truck tour around an ostrich farm in the middle of the desert.

San Diego's most historic and haunted home.

The so-called "Bridge of Thighs" in Palm Springs allows nudists to discreetly cross the road.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

Giant origami crease patterns engraved in Santa Monica intersections may even be visible from space.

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

Despite a recent paint job, the factory still sits empty.

What is the Thing?

This quirky hot springs town known to locals as "T or C" was named after a radio show.

Albuquerque found the perfect use for tumbleweeds at Christmastime.

This southwest-styled home in Santa Fe claims to be the oldest house in America thanks to an ancient bit of foundation.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

The oldest continuously occupied public building in the United States.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.