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

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

Guns that have been defending San Francisco since 1904.

One of the last remaining Carpenter Gothic churches is situated on a wildflower conservatory overlooking the bay.

A living time capsule of the 1960s Richardson Bay water-front.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Concrete strongholds stand guard over the Golden Gate.

Outsider art or homage to aliens?

This graffiti-covered bridge is the quintessential vision of a place for disillusioned youth to escape the complexities of burgeoning adulthood.

This corn maze so big you may want to pack a lunch, and possibly a flaregun.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

Seven ceramic sculptures are scattered around this California college campus.

Special tunnels built so that frogs won't be killed when crossing the highway.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A working miniature city designed to teach kids about safety and presumably city planning.

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

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

I Street Bridge is the heaviest swinging center bridge in the United States.

The capitol city's oldest existing cemetery.

Art Deco stylings conceal the true nature of this bridge.