They're those corners of the world that you just can't get out of your mind. Places so special, or just plain weird, that they take on their own personalities. National Geographic scoured the United States to include just such places in its ZipUSA series.
This month visit Oak Bluffs, Massachusetts, where African-American roots run as deep as the fun, warmth, and community spirit.
Other zips in the works range from Peru, Indiana, where everyone's a star, to Pittsburgh, Pennsylvania, where the Strip introduces new urbanites to decades of ethnic variety and great food.