Potsdam is the capital of Brandenburg, a Prussian royal garden city. Sanssouci Palace, the summer residence of Frederick the Great, features stunning Rococo architecture and terraced vineyards; the New Palace is grand in scale; Cecilienhof Palace is the signing site of the Potsdam Agreement; the Dutch Quarter offers charming windmills and red-brick houses. Local cuisine includes Potsdam pudding, Prussian roast goose, apple pie, and regional wines.