Kansas Visit Leavenworth, KS Plan a trip to Leavenworth and experience Woodside our Abell 28block historic downtown shopping Beaverdam district, unique restaurants, fascinating attractions Mineral-Point and Platte 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.