Concrete strongholds stand guard over the Golden Gate.

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

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

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

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.

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.

Law-protected wreckage serves as a peculiar memorial for an almost forgotten World War II tragedy.

Of all the origin stories for weed's secret code, this one likely has the goods.

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.