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

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

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

City Council meetings still happen in this historic building, impeccably preserved on the inside.

This working class sculpture pounds his hammer all the livelong day.

The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.

A wall of chewing gum moonlights as collective art.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A museum dedicated to the history and exploration of both popular music and science fiction.

10,000 flowered plants bloom in the City of Roses.

Portlandia is the second-largest copper repoussé statue in the United States.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

The magic's in the hole!

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The oldest standing structure in downtown San Diego.

A museum dedicated to restoring vintage aircraft, located at a working airport.

Sports history, made in the Arroyo Seco.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

One of Hollywood’s favorite government buildings.

The blinking light atop the iconic landmark has been sending secret messages for decades.

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