An overlooked and unassuming engineering marvel.

San Francisco’s century-old Christmas Tree.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The most beautiful Taco Bell in the world even has surfboard parking.

A large instrument played by the wind.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

A classically inspired temple in Redwood City.

The Internet Age began with a transmission from this biker bar.

This odd California folly seems like it was almost designed to accumulate urban legends.

Anyone can control this glittery light installation with just a phone call.

Three plaques mark the spot where the "forgotten father of broadcasting" worked.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.