This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

A remote crossroads honoring a fallen talent.

A massive volcanic plug is now a protected area that hosts a number of bird species.

A Masterpiece with a Tragic History.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

This giant temperature attraction created some giant electric bills.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

The Giant Lemon of Lemon Grove.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

This enormous World War II relic is one of the largest wooden structures in the world.

The rest of him lived another 61 years and was buried elsewhere.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A monthly street "service" of handmade puppets and live original puppets, whose devotees profess has the power to change lives.

Four hundred granite steps were built into this massive rock by the National Park Service.

The only visible piece of San Francisco's most famous shipwreck.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

Oldest building in California still in use.

Get up close to emus and ostriches, or buy their tasty meat.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

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

The ruins of the castle that chemicals built.

A multimedia experience that chronicles the atrocities of racism.