It seems like there are open-air cafes everywhere in France. In a large open area, there will be several different cafes running into each other one after another. There appear to be no reservations and people just walk by and sit at any open table and then linger for hours. It seems like a wonderful way to build and enjoy a sense of community. Am I wrong, or do these not really exist in the US? And why not? Is it a cultural thing or just an artifact of US urban design and zoning?