Buenos Aires

Buenos Aires is the capital and largest city of Argentina

Is presumably mentioned in Bart vs. Australia by the next quote. Adolf Hitler: Eine Minuten, eine Minuten! Ach! Das Wagen-phone ist ein...Nuisancephone! Man: Buenas noches, mein Führer! Hitler: Ja, ja.
 * Bart: I can't get a straight answer out of this crazy hemisphere. (he calls another number and reaches a car phone in Argentina, possibily Buenos Aires)