The last of a gourmet supermarket chain, this store helped spark California's Food Revolution.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The remains of a ruined mansion memorialize the 1906 earthquake.

A monumental cross hides in the trees in Golden Gate Park.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

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

A hidden subterranean installation offers a view of the sky.

The oldest lawn bowling club in the United States.

A collection of anti-communist sculptures stands watch in the Mojave Desert.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

San Francisco's first World's Fair, dedicated to the wonders of California.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

A lovely park home with a few interesting guests.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

These markers are used to determine the ground stability of the Strip.

The world’s largest concentrated solar plant generates as many problems as megawatts.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.