The right literature, sure, and, of course, the Château de ... Les Grandes Eaux Nocturnes—the nighttime fountain show and fireworks—which is a breathtaking way to see Versailles after dark.

Renee Kemps Alain Ducasse's restaurant--officially, Ducasse at Château de Versailles, Le Grand Contrôle--is another big draw. Meals, especially at dinner, are 18th-century-like performances.