"The only replacement for a DC-3 is another DC-3."

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

A second generation sun-powered marvel lights up the night.

An offbeat angle on the ocean viewed through an antiquated lens.

One of the first skyscrapers in Santa Monica, and a famous getaway for the Hollywood elite of then and now.

A castle that was built stone by stone by an eccentric journalist.

A nursery specializing in strange and beautiful succulents and cacti.

Iconic Los Angeles residence famous for its 19 statues of Michelangelo's David.

First LEED-certified gas station in the United States.

Most famous work of one of Frank Lloyd Wright's sons.

Storybook cottage in Beverly Hills was once the site of 1920s silent film studio, affectionately known as "The Witch's House."

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Abandoned bridge hidden deep in the San Gabriel Mountains.

Thousands of turbines whir at the origin of North American wind power.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.