San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

A huge musical instrument played by the ocean.

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

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

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The beautiful behemoth is one of the largest trees of its kind in the United States.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

Try the frozen treat that inspired Arrested Development's famous banana stand.

This wooden statue commemorates a man who spent nearly 40 years waving hello to the people of Laguna Beach.

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

This stately structure has been abandoned for half a century.

A world-class observatory in the California desert.