en Altadefinizione. In the wake of hurricane Katrina, as Americans begin a dialogue about the future of one of the nation's most distinctive cities, AMERICAN EXPERIENCE presents a provocative history of the city that lies at the mouth of the mighty Mississippi. Walled in on almost all sides by water, pressed together by the demands of geography, New Orleans has always been a laboratory where the social forces play out in dramatic and, at times, disastrous fashion.