In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Concrete strongholds stand guard over the Golden Gate.

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.

Once the gateway to the utopian dream-village of a Civil War embalmer.

An abandoned, unfinished mansion on grounds strewn with lava rocks.

Social saloon from a scrapped trans-Pacific 19th century steamer.

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.

Discover for yourself what Herb Caen referred to as "the best kept secret in the Bay Area."

California's own majestic geyser is powered by a subterranean volcano.

One man's love of natural beauty led to the creation of this hidden granite monument.

This infamous prison has a store where you can buy goods crafted by incarcerated people.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

'Cause the fence start shaking, the earth was quaking.

Across Ring Mountain is a vast collection of Native American petroglyphs unique to the region.

At night, a grove of towering redwood trees growing through the pavement block out all light from the so-called “Dark Park” of Madrone Avenue.

George Lucas donated this park to honor the birthplace of his two biggest movie franchises.

Frank Lloyd Wright died a year before construction on his largest public project even began.