One of the last free public hot springs is decorated with hippie art.

Hundreds of trees made from glass bottles make up this forest on Route 66.

The so-called "Statue of Liberty of Los Angeles" is on a one mutant mission to keep L.A. weird.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

The unbelievably opulent home built for an infamous newspaperman.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The abandoned personal amusement park of the King of Pop.

This failed condo development was reborn as a street art hub.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

One of the ghostly stops along Route 66.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

This massive redwood tree has a hole in the base big enough to drive through.

An eclectic trailer park retreat in the middle of the California desert.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

The largest drain hole in the world.

The largest permanent Monopoly board makes one of the longest games even bigger.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

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

The ghost town that ended up on Ebay.