Bohol's mysterious brown hills.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

This hands-on math museum believes in turning concepts into constructs.

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

Los Angeles's oldest cemetery allows visitors to trace the history of this proud city.

Celebrating the accomplishments of Black firefighters in Los Angeles.

Towering basalt columns, a creation of fire and ice.

Built by one man in the '20s, this site is now a museum representing the Great Basin cultures.

Educational foundation that teaches the powers of fourth dimensional physical properties.

This historic tower in the California desert promises visitors a "vortex of good vibes".

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

Where NASA's satellites and rovers phone home.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

The Giant Lemon of Lemon Grove.

Along a California highway is a kind of Jurassic Park made of metal.

Megachurch turned Catholic church comprised of 10,000 glass panes.

A Biblically-based Natural History Museum.

Once a purveyor of Santeria supplies, religious products , and household sundries, now closed.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

An ultra-modern vista that has been featured in so many films the house is a celebrity in its own right.

Rainbow-hued local gem in Venice.

Where religious effigies, magic soaps, and occult candles are brought to customers at wholesale prices.

Famously misunderstood wonder of the ancient world