Rainbow-hued local gem in Venice.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

One man's homage to the sun continues to grow like a glass fractal.

America's most famous piece of self-built architecture.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

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

The legendary building that needed ghostly approval before being built.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

World's largest collection of serial killer artwork and other macabre exhibits.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

A 140-year-old castle with underground caves hidden in San Francisco.

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

Home to a forest of whimsical pygmy Coast live oak.

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

The unbelievably opulent home built for an infamous newspaperman.

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

This massive statue of John Muir on the side of a California highway was carved from a redwood tree.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

The echoes of a railroad town that solemnly mark the end of the line.

This dry lake bed contains the oldest known petroglyphs in North America.

Colorful outcrops and cliffs just north of Reno provide a scenic backdrop for hiking and mountain biking.