December, Christmas Holiday Palaces regularly open Ferry Peacock Island in operation 31 December, New Year's Eve Visitor Centers and Sanssouci Palace, New Palace, Charlottenburg Palace (Old Palace & New Wing) [...] House open until 2.30 p.m (last admission 2 p.m.). Ferry Peacock Island in operation 1 January, New Year's Day Palaces regularly open from 11 a.m., Visitor Centers from 10.30 a.m. Ferry Peacock Island in