Karlsruhe

Holy Roman Empire de facto · 1789 – August 6, 1806 (from the border data)
Confederation of the Rhine de facto · April 11, 1807 – November 4, 1813 (from the border data)
Grand Duchy of Baden de facto · 1810 – May 3, 1871 (from the border data)
German Confederation de facto · July 26, 1815 – May 18, 1848 (from the border data)
German Confederation de facto · November 29, 1850 – August 23, 1866 (from the border data)
German Empire de facto · May 4, 1871 – November 9, 1918 (from the border data)
Germany de facto · November 11, 1918 – May 8, 1945 (from the border data)
United States de facto · March 24, 1945 – May 8, 1945 Military occupation (from the border data)
Germany de facto · since May 23, 1949 (from the border data)

Grand Duchy of Baden August 6, 1806 – November 14, 1918 From Wikidata (capital, P36)