A collection of 20th-century automata, penny arcade games, and musical contraptions.

San Francisco's newly reopened hands-on science museum.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

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

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

A family agreed to sell their property to Disney on the condition that this tree, planted as a wedding gift, would not be removed.

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

North America's largest accredited model railroad museum.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Shop selling 500 flavors of soda has something for everyone.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

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

The legendary building that needed ghostly approval before being built.

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

The liveliest ghost town in the state.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

A sculpture made from recycled materials and hand-blown glass dedicated to transportation and transformation.

One tiny triangular park commemorates the victims of a yellow fever epidemic—many of whom are buried right below the grass.