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

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

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

In this century-old literary safehouse, print is alive and well.

An inconspicuous footbridge beloved by San Diego locals.

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

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

Explore 10 acres of environmental sculptures.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Tiki luxury on Nob Hill.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

A hotel and restaurant serving as the mecca of kitsch.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

A strange house built only at night, with rumored mystic inspiration.

A library of rare occult books in Los Angeles.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A hand-built folk art installation covered with messages of God's love.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

A psychedelic labyrinth on the San Francisco bay.

A master of deception, Harry Houdini's greatest trick may have been living in two places at once.

The hotel room where Janis Joplin tragically died has now become a makeshift shrine to the singer.