Schloss Schmiechen, Castle Monument in Schmiechen, Germany.

Schloss Schmiechen is a four-storey building with a hipped roof, the surviving core of a former moated castle whose origins go back to the 16th century. Of the one-time extensive complex only this block and remnants of the former farm buildings remain; in 1827 the owner Klemens von Thünefeld had the decayed structure demolished down to this part.

The core of the four-story hipped-roof building dates from the 16th century. The Fuggers bought the Hofmark in 1509 and renovated the run-down water castle, which was completely devastated during the Thirty Years' War. In 1809 Joseph Hugo Graf Fugger sold the ruinous, uninhabitable castle to Bishop Clemens Wenzeslaus von Augsburg. In 1827 Klemens von Thünefeld had it demolished down to the surviving remnant.

The name Wiedersperg-Leonrod, used by the owners since 1950, recalls Ludwig von Leonrod, executed in Berlin-Plötzensee on 26 August 1944 for his part in the military resistance around Claus Schenk Graf von Stauffenberg. His widow Monika remarried Johann Freiherr Wiedersperger von Wiedersperg in 1948, and the family still lives on the castle grounds.

The building is privately owned and inhabited by the Wiedersperg-Leonrod family, who live on the castle grounds, so visits are limited to viewing the exterior from public paths. The four-story hipped-roof core and the remains of the former economic buildings stand in Schmiechen in the Aichach-Friedberg district.

Ludwig von Leonrod, who married Monika Freiin von Twickel at Ettal on 25 March 1943, belonged to the circle around Claus Schenk Graf von Stauffenberg and was executed at Berlin-Plötzensee on 26 August 1944. Since 1950 his descendants, who still live on the castle grounds, may bear the name Freiherren von Wiedersperg-Leonrod in his memory.