One of the greatest and most beautiful examples of European rococo, Sanssouci was built between 1745 and 1747 as Frederick’s summerhouse, a place where he could let his wig down, discuss weighty matters with French philosopher Voltaire, and make music with composer Carl Philip Emanuel Bach. In short, Sanssouci (“without cares”) was a sort of summer resort for an enlightened monarch. The long, one-story building is crowned by a dome and flanked by two round pavilions. Fred the Great created the original design for the grounds, and his planning still is evident in the restored vineyard terraces and the area immediately around the palace. The elliptically shaped Marble Hall is the largest in the palace, but the Music Salon is the supreme example of the rococo style. All kinds of rococo treasures fill the palace, which you see on a tour that lasts about 45 minutes. The tour is given only in German, but information sheets in English are available from the guide.