I haven't been to many. I live in Pittsburgh but when I traveled to Florida I went to Kissimmee which was awesome. So I guess it's Pittsburgh and Kissimmee
Washington DC. It's a beautiful city with so many beautiful things, like museums and monuments. What I think really makes Washington DC great is that it has all the art and culture of a city like New York or London, but does not have the urbanization and mass industry that can make a city overcrowded and dirty.