It's a thumb shaped peninsula seven miles across with a 922' peak in the middle. Market St runs diagonally through downtown separating two grid systems, the south side of which is offset by about 40 degrees. Columbus St runs diagonally in the opposite direction through Little Italy and China Town, itself a maze of one way streets, ancient buildings, triangular parks and steep hills. The whole thing is cut up by trolly tracks, makeshift bike lanes, and more pedestrians per square foot than most places in the US. Be prepared for your two-lane road to suddenly turn into a one-way street running towards you, seven way intersections, pedestrian traffic that never stops, and lane markers that completely disappear in the rain. On top of everything, intersections are only ever labeled in one corner, but never the same corner, and at least half of the stop signs are behind trees that should have been trimmed five years ago. Also it seems like 10% of drivers are drunk or stoned, and there's a moving van blocking 60% of the road everywhere, all the time.
