Schloss Deichmannsaue

Schloss Deichmannsaue stands in Rüngsdorf, a district of Bonn’s Bad Godesberg quarter, beside the Mehlemer Auen nature reserve north of the Rhine ferry to Königswinter. Built in 1662 as the Auerhof farm, it passed in 1836 to the Cologne banking family Deichmann. By 1912 the villa had been transformed into a four-winged château under the direction of architect Peter Wald for Wilhelm Theodor Deichmann. The complex now belongs to the German state and houses federal authorities. The site is notable for its post-war role as the American High Commission seat from 1949 to 1955 under High Commissioner John McCloy. In eleven months the architects Sep Ruf and Otto Apel with colleagues created 700 offices in timber-frame style, designed by Hermann Mattern and Heinrich Raderschall. The building witnessed the 1955 proclamation ending Allied occupation and later served as the US embassy until 1999. Visitors find the four-winged château with its 1910–12 alterations forming the historic core. A raised connecting wing links the old villa to the 1951 extension of offices and a new cafeteria added in 2005. The surrounding park and river meadows remain largely unchanged since the Deichmann era, offering quiet walks beside the Rhine.