Caserta's draw is almost entirely the Reggia — and that's not a complaint. The royal palace and its vast grounds constitute one of the most ambitious building projects in European history, and a single day here barely scratches the surface. Beyond the palace walls, the hilltop village of Casertavecchia offers a quiet medieval counterpoint, and the Bourbon silk manufactory at San Leucio rounds out a picture of 18th-century royal ambition that few cities can match.