Visited many times, work-related. Los Angeles, San Francisco, Denver, St. Louis, New Orleans, Houston, Dallas, New York, San Antonio, Pittsburgh, Chicago, Cleveland, Philadelphia, Atlantic City, Portland, Connecticut, Detroit, Honolulu.
World's best at logistics. O'Hare airport is mind-blowing. Best food in New Orleans, with Cajun and Creole cuisine. Food served in excessive portions, no wonder many Americans are obese. Houston has the history of the skyscraper. Palpable racial hatred in the northern cities.
I could go on for quite a while, IMO that's enough. Your turn.