Inspired by WalkScore—but disappointed by the level of detail in its recent map of Seattle—Lee Byron made a highly detailed ("to the block"!) walkability map of San Francisco. (The higher the "walkabilty" rating, the easier it is to live there without owning a car or depending heavily on public transportation.) Visit his site to see a bigger version of this map! (The most walkable areas are the darkest.) [Lee Byron]

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