Having grown up in Boston--
Boston Steak Bombs (a steak bomb is a form of cheese steak that has peppers, onions, mushrooms, and sandwich pepperoni)
Boston Lobster Rolls (every bit as good as they are in Maine, maybe even better)
I once had a team in a league called the Baltimore Charm City Cakes (shout-out to Duff Goldman, who used to wear a Norwich hockey jersey, because the owners of the production company were fellow alums)
Baltimore Crab Cakes
Living now in southern Arizona--
Arizona Chimichangas (claimed to have been invented in Tucson)
Arizona Sonora Dogs (Hot dog wrapped in bacon, covered in beans, cheese, jalapeno, and condiments...mmmmm, Sonora Dogs!!!!!)