Territory of the Free Imperial City of Ulm in the late 18th century (in yellow). Also shown in the upper right section is the smaller Imperial City of Giengen (also in yellow). On the map, the areas in steel blue color crisscrossing the southern part of the territory of Ulm belonged to the Imperial Abbey of Elchingen. Other patches in the same color belonged to other ecclesiastical states such as the Imperial Abbey of Wettenhausen. Much of the area north and west of Ulm belonged to Württemberg. Cropped from a historical map showing Southwestern Germany and Alsace in 1789, by Karl Spruner and Theodor Menke (1880).