Junkbots and mud babies are the masterpieces in this fantastically sci-fi art museum.

Special tunnels built so that frogs won't be killed when crossing the highway.

An iconic 1960s theater with a Buckminster Fuller-style geodesic dome.

The arch that celebrated the completion of the Lincoln and Victory highways.

This museum glorifies the humble potato.

An architect's childhood fantasy treehouse made real.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

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

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Over 315,000 preserved amphibians and reptiles in jars.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

A speck of nature and art in one of San Francisco’s most notorious neighborhoods.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

A man-made island in scenic San Francisco Bay.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

Art from the latest counter-culture; kids who dye their hair blue and believe the future will be a post-apocalyptic water world.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

With the touch of a button, you can read a randomly selected short story.

A hidden subterranean installation offers a view of the sky.