The ghostly remains of an accidental sea.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

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

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

Olfactory delights in San Francisco's Botanical Gardens.

A trash dump made beautiful by nature's power.

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

Resting place of Hollywood's immortals is also site of summer film screenings.

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.

A huge musical instrument played by the ocean.

An abandoned boat that's been stranded mysteriously for decades.

Here, visitors can swing with the waves of the Pacific Ocean.

An Aladdin's cave of old Silicon Valley tech.

Hidden among the multi-million dollar mansions in the Santa Cruz hills is a sanctuary for troubled birds.

A vast city of the dead, where the deceased outnumber the living by more than a million.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

A large instrument played by the wind.

Historical trolley restoration and operation at History San Jose, Kelly Park.

An unassuming grey box sitting on San Francisco's Pier 17 is a "sky diary" of the coastal city's temperamental weather.

For nearly 50 years, this San Francisco nonprofit has been serving as a mix of recycling center and art school.

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

Overflowing with shipping containers, this location has been transformed into a massive workspace for artists.

These subterranean storage areas hold emergency water reserves.