A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A library of rare occult books in Los Angeles.

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

Olfactory delights in San Francisco's Botanical Gardens.

Where America's first doomsday cult awaited the end of the world.

Hollowed out cedar log tubs set in an ancient towering forest.

A beautiful geyser under environmental threat.

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

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

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

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

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The first declared National Monument in the United States.

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

Odd outsider art installations surround a Gold Rush-era ghost town.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Its buzzing collection honors vibrator history.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A hip bar decorated with walls of golden skulls.