This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

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

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

One of the ghostly stops along Route 66.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

The final resting place of a space program monolith.

A meditative space out of a fantasy story.

In this century-old literary safehouse, print is alive and well.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

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

Oldest building in California still in use.