Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A hidden subterranean installation offers a view of the sky.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

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

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

A huge musical instrument played by the ocean.

A Bicycle Path in the Sky.

This Hollywood dive houses a mural painted by the artists who animated its namesake film.

A cake-themed art installation tucked away in historic Chinatown.

An expansive book store, art gallery, and curio shop with wares ranging from tarot cards to novelty socks.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

A ghost town at the airport is now a refuge for blue butterflies.

Sister store to the Echo Park Time Travel Store.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

World-famous, Pink's still manages to keep its prized cult fetish status.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

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

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

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

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

A music-filled, booze-soaked oasis in the desert.

A fake town founded by Western movie stars is now becoming a hip desert community.