Khuenburg Palace

The Palais Khuenburg is a former city palace in Graz located on Sackstraße in the Innere Stadt district. Today, the GrazMuseum is situated in its premises.
The palace is positioned between the oldest documented house in Graz, the Reinerhof, and the former Palais Herberstein. In the Middle Ages, it belonged to the Reinerhof, whose owner was the Stift Rein. It was constructed after 1564 by the chamberlain of Archduke Karl and the governor of Styria, Maximilian von Schrattenbach, as a Baroque townhouse. Schrattenbach received his noble title in 1598 and was elevated to the rank of baron. The next owners around 1630 were Count Otto Ehrenreich Trauttmansdorff and the war paymaster Johann Sebastian Schäzl, who sold it in 1676 to Sigmund Ludwig Khuenburg.

Wikipedia