The intricate toothpick sculptures of Scott Weaver.
Notes about Weaver (from Meet the Artist):
I started building toothpick sculptures in 1968, when I was 8 years old. My early structures were abstract and about 2 – 4 feet tall. I built one sculpture that had a ping-pong ball roll through it. In 1974 I started a new sculpture and added the Golden Gate Bridge and Lombard Street, that also had a ping-pong ball roll through it. This is what started what is now Rolling Through the Bay.