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

Seven ceramic sculptures are scattered around this California college campus.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This giant shopping mall still holds signs of its automotive past.

From the Difference Engine to the Cray-1, all under one roof.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

A classically inspired temple in Redwood City.

A store that sells all manner of bones, insects, and animal curiosities.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

A private home built to resemble the shape of a microscopic creature.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

Worker-owned cooperative and resource for those looking to lighten their ecological footprint.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

An vast warehouse of everyday treasures in Berkeley, CA.

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

Dive bar built out of the remains of a whaling ship.

Antiques by the Bay.

Concrete strongholds stand guard over the Golden Gate.

Internationally-recognized arts center housed in a century-old former military barracks.

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.