Dominating Piazza del Plebiscito, the huge palace—best described as overblown imperial—dates from the early 1600s. It was renovated and redecorated by successive rulers, including Napoléon's sister Caroline and her ill-fated husband, Joachim Murat (1767-1815), who reigned briefly in Naples after the French emperor sent the Bourbons packing and before they returned to reclaim their kingdom. Don't miss seeing the royal apartments, sumptuously furnished and full of precious paintings, tapestries, porcelains, and other objets d'art. The monumental marble staircase gives you an idea of the scale on which Neapolitan rulers lived.
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