The oldest home in Huntington Beach, the farmhouse is a monument to the region's pioneer past.

An unexpected and peaceful oasis on a hillside.

A historic fort commemorating the United States' naval history.

Inspiring Earthlings to Boldly Go.

This giant temperature attraction created some giant electric bills.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

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

One of the best collections of antique printing machinery in the world.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

A surreal, Gaudi-inspired play space near an Anaheim community center.

The California capital city once stood 10 feet lower than it does today.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

An extraordinary final resting place full of oversized art, amazing statues, and dead celebrities.

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

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

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.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

The site of murders and Satanic cult gatherings.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Historic funicular railway, believed to be the shortest railroad in the world.

Quite simply the largest tree in the world (by volume).

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

San Francisco's newly reopened hands-on science museum.