Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

The most magnificent bottle house in a town strangely full of them.

A land of debatable treasure.

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

Tulsa's historic skyscrapers define the oil boom era of Art Deco construction, and are known for their ornate arched lobbies.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

An acoustic anomaly with a mysterious cause.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

Where the alchemists dream of transmuting base metal into gold was actually achieved.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

An vast warehouse of everyday treasures in Berkeley, CA.

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

The newsstand that never closes its doors—well, almost never.

A restored 1920s cascade stairway provides one of the best views of Oakland's Lake Merritt.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

Dive bar built out of the remains of a whaling ship.

Over 315,000 preserved amphibians and reptiles in jars.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.