Quite simply the largest tree in the world (by volume).

This municipal playground was co-created by the father of one of the most playful characters ever.

A house built from trash known as the poor man's Hearst Castle.

A hotel and restaurant serving as the mecca of kitsch.

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

NASA's leading space science lab started by a co-founder with deep ties to the occult.

Oldest building in California still in use.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

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

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

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

A large sculptural artwork and garden in Escondido, California.

A world-class observatory in the California desert.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

An office built to look like a giant basket.

The museum chronicling a treasure hunter's dream, fulfilled.

A monument celebrating the idea of reaching inaccessible places.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.