architecture berlin castle charlottenburg classic germany landmark representation representative Rococo tower baroque belvedere brandenburg elector enlightment Friedrich III garden Langhans italian Nering palace Sophie Charlotte amber Frederic III park art nouveau huge massive town hall pond water atmospheric big biome grass green idyllic Land lot landscape leisure meadow natural environment Natural landscape nature nature reserve outlook peaceful property recreation rest scenery spring sun sunlight tree trees vegetation woody plant building ceiling decoration decorative door entrance entry estate facade home house mansion old plant real estate stair step wood wooden buildings gable Historic house houses roof roofs rural villa white white house window windows