Here's another card to my UNESCO collection (I've been getting more serious about collecting them, but I know I won't ever have cards showing all the UNESCO sites). It shows the Sanssouci palace in Potsdam. Palaces and Parks of Potsdam and Berlin were inscribed on the World Heritage List in 1990.
Sanssouci is the former summer palace of Frederick the Great, King of Prussia, at Potsdam, near Berlin. It is often counted among the German rivals of Versailles. While Sanssouci is in the more intimate Rococo style and is far smaller than its French Baroque counterpart, it too is notable for the numerous temples and follies in Sanssouci Park. The palace was designed by Georg Wenzeslaus von Knobelsdorff between 1745 and 1747 to fulfil Frederick's need for a private residence where he could relax away from the pomp and ceremony of the Berlin court. This is emphasized by the palace's name: a French phrase (sans souci) which translates loosely as "without cares" or "carefree" symbolising that the palace was a place for relaxation rather than a seat of power.