World War II-era Nazi compound nestled in the Santa Monica hills.

Gift shop offering toe tags and chalk body beach towels tucked into a coroner's office.

Medical and zoological curiosities for sale.

Eight huge lanterns lining a city street can change color on command.

While you're unlikely to find riches here these days, this remote mine is a time capsule of the Gold Rush era.

This ramshackle ghost town is comprised of mining-era buildings collected from around the region.

The oldest house in the capital of Silicon Valley.

800 apricot trees honor Silicon Valley's agricultural history.

A simple statue outside a California Amtrak station honors the overlooked contributions of the "silent spikes."

Art Deco stylings conceal the true nature of this bridge.

Hidden inside a gift shop that doubles as a museum, this gargantuan yo-yo can only be operated by crane.

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

Here, Father Agapius Honcharenko established his homestead, becoming the first nationally conscious Ukrainian to settle in the United States.

A sparse, solitary sequoia still stands as a living tribute to the famous conservationist who planted it—but it's dying.

This 252 step staircase offers stunning views of San Jose.

The oldest structure in a beachside California city was built to serve eight students.

The ruins of the movie ranch owned by actor and stuntman Ray "Crash" Corrigan.

This outdoor observatory offers stellar views and a scale model of our solar system.

Downieville's largest Gold Rush structure still standing has one of the longest bars in California.

The neighborhood of Eagle Rock is named after a gigantic boulder with a shadowy surprise.

This secluded date farm can be reached only by following a bumpy, single-lane desert road.

This house is a mosaic of tiled artwork sourced from local artists.

Once the largest town in eastern Yuba County now sits abandoned.

This fully intact Neoclassical-Greek Revival style firehouse operated until 1938.