Walking down Mulberry street I spotted this great sign in front of The Picture Room McNally Jackson Store.
The sign is the work of Benjamin Critton. It features a series of squares whose sides increase based on the Fibonacci Sequence. The first two squares are the same size. The third square has sides twice the side of the first. The fourth has sides three times as long as the first. This continues until the 7th square has sides 13 times longer than the first. They all are spiraled into a neat Fibonacci rectangle with sides in an 8:13 ratio.