San Francisco's newly reopened hands-on science museum.

A man-made island in scenic San Francisco Bay.

One time home to turn of the century explosives, now hidden under the Bay Bridge.

A creepy steel gremlin has protected the Bay Bridge since 1989.

Condemned US Navy seaplane control tower turned officers’ club sits atop Yerba Buena Island.

Explore 10 acres of environmental sculptures.

Hike amid the palm trees that thrive among Southern California's Indio Hills.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

This historic graveyard was partially paved over to create a streetcar line.

An inconspicuous footbridge beloved by San Diego locals.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

One of the largest trees of its kind in California.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

The freeway that never was.

The classic Atari game's iconic aliens have invaded downtown San Diego.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

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

A huge musical instrument played by the ocean.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A gift from Abbot Kinney and a little bit of piece of Black history in Venice Beach.

The words of the neighborhood's most famous poets adorn four concrete walls.