Every city I’m familiar with has some areas that are economically depressed, and not great places to visit, let alone live in. But there are also areas, often in the 'burbs, that are upscale and thriving. And of course, many areas in-between.
Are there any U.S. cities that don’t have one extreme or the other, cities that don’t have either a “bad” neighborhood or an upscale one?
How about non-U.S. cities? Even in third-world countries, are there still wealthier neighborhoods outside the squalor?