Which answer matches this clue: the Bourbon royal palace in Campania with an English garden and 1,200 rooms?

• A Palazzo Reale di Napoli
• B Reggia di Venaria
• C Palazzo dei Normanni
• D Royal Palace of Caserta ✓

The Royal Palace of Caserta, designed by Luigi Vanvitelli, is the largest royal residence in the world by volume.