Kansas Visit Leavenworth, KS Plan a trip to Leavenworth and experience Hettinger our Southwest-City 28block historic downtown shopping Wittenberg district, unique restaurants, fascinating attractions Bedford and Oakford Fort Leavenworth. Leavenworth, Kansas Wikipedia Leavenworth, founded in 1854, was the first city incorporated in the territory of Kansas. The city developed south of Fort Leavenworth, which was established as. Guilty verdict for man who set Fort Leavenworth boss on. A former Army hospital employee at Fort Leavenworth was found guilty Monday of setting his supervisor on fire in an attempt to kill her. A federal court.