The predominant stylistic devices of the Rococo period are asymmetrical forms, and shell- and tendril-shaped objects (French: Rocaille).
Prussian/Frederician Rococo is defined by French savoir-vivre. French was the language of the court, Frederick the Great had Sanssouci Palace built (1745-47, designed by Georg W. v. Knobelsdorff, interior design by Johann Michael Hoppenhaupt), Antoine Watteau was among the favoured painters (he created the new fêtes galantes genre). The king corresponded extensively with Voltaire, the philosopher of the Enlightenment.