Official residence of the State Ministry of Baden-Württemberg and the acting Prime Minister
Villa Reitzenstein

In Stuttgart, the Villa Reitzenstein serves as the official seat of the Baden-Württemberg State Ministry and the incumbent Minister-President. It is on a hill in the Stuttgart-Ost district.
History+
The Villa Reitzenstein was built between 1910 and 1913 for Baroness Helene von Reitzenstein, daughter of the Stuttgart publisher Eduard Hallberger. Architects Hugo Schlösser and Johann Weirether drew inspiration from trips to France and Italy for the construction, which was designed in the French Baroque style as a two-story, three-wing complex made of Maulbronn sandstone. Even then, the villa featured a central hot water heating system. After only nine years, Helene von Reitzenstein left Stuttgart, and the villa was temporarily used as a military hospital during World War I. In 1922, the state of Württemberg acquired the villa, originally intending to house the Imperial Administrative Court there, a plan that was never realized. From 1925, it served as the seat of the Württemberg State President, starting with Wilhelm Bazille.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://schloesserrundschau.de/bawue/schloesser/stuttgart002.html
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 48.7714, 9.1928