Favourite Cities to Visit

Hey guys I'm making a trip to Seattle next week, which got me thinking about what my favourite cities to visit in the States are. So, I'd like to know what your favourite American cities to visit are and why. I'll go first: Los Angeles: Great diversity of towns (Chinatown, Koreatown, Little Saigon), fantastic eatage, gorgeous women. Chicago: Great shopping, great restaurants, great sightseeing spots, amazing music scene.>