With 0.45 km², Carlstadt is the smallest district of Düsseldorf in terms of area and borders the old town, the city center, Unterbilk, and the Rhine. The boundaries of the district are the Rhine to the west, Kasernenstraße to the east, and mostly Haroldstraße to the south. The northern border to the district Altstadt, on the other hand, is more complicated. Especially the northwestern area currently does not correspond to the historical development, even though "Rheinort" and "Alter Sicherungsha...