From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

A monumental cross hides in the trees in Golden Gate Park.

A large instrument played by the wind.

Eccentric sculptures made from repurposed materials peppers this former farm.

The fossilized remains of ancient California redwoods.

California's own majestic geyser is powered by a subterranean volcano.

This historic California cemetery holds the bodies of veterans of both the Civil War and the Donner Party.

A veteran Disney animator turned his gift for storytelling to a museum devoted to his love of a California city.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

This California museum is home to one of the largest collections related to the 'Treasure Island' author.

The haunting ruins of Jack London's dream house.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

This world-class vineyard has a peculiar collection of contemporary sculptures scattered across the property.

A tribute to one man's legacy of improving the accordion's reputation.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

Massive prehistoric mammals used these stones as oversized scratching posts.

Believe it or not, this is the final resting place of the man who created the Odditorium.

This California family's ancestral melon is sold only here.

340 bicycles, 65 feet high.

The source of America's longest river is also a historical landmark and the start of a famous nude run.

What if the cure for all that ails you was as simple as repeated exposure to low-dose radon?

The second-tallest water tower shaped like a peach in the American South.

This oddly shaped boulder in Paris is rumored to be cursed.

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.