If you want to venture to the frontier of contemporary cooking—and if money is no object—dinner here is a must. Chef Pierre Gagnaire's work is at once intellectual and poetic, often blending three or four unexpected tastes and textures in a single dish. Just taking in the menu requires concentration (ask the waiters for help), so complex are the multiline descriptions about each dish's six or seven ingredients. The Grand Dessert, a seven-dessert marathon, will leave you breathless, though it's not as overwhelming as it sounds. The businesslike gray-and-wood dining room feels refreshingly informal, especially at lunch, but it also lacks the grandeur expected at this level. The uninspiring prix-fixe lunch (€115) and occasional ill-judged dishes (Gagnaire is a big risk taker, but also one of France's top chefs) linger as drawbacks, and prices keep shooting skyward, so Pierre Gagnaire is an experience best saved for the financial elite.