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

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

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

A shining, cold, black organ lies in San Francisco's financial district.

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

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

A classic advertising icon immortalized in regal bronze.

A psychedelic labyrinth on the San Francisco bay.

A comprehensive collection of Pez dispensers.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.