The obsessions that San Francisco provokes are a clear measure of the city’s seductively nutty power.

This video takes the biscuit; a Rube Goldberg toothpick vision of San Francisco — constructed during the course of 35 years from over 100,000 toothpicks.

And some glue.

What’s even crazier is that the whole thing is basically a gigantic game of “Mousetrap” — drop a ball into the top of Coit Tower and it takes you on a tour of the whoooole town, cable cars, Chinatown, Golden Gate Bridge, Alcatraz, and all … this thing has to be seen to be believed.

And as to the motivation behind this fantastic kinetic confection, let me quote the Rohnert Park contraption-builder-in-chief, Scott Weaver:

“for no reason … just to build it so that people will go ‘wow’ … or ‘why’”.