A throwback to an age before foams and food science took over the gastronomic world, this restaurant has elevated simplicity to the level of the spectacular since the early 1970s. Isidre and Montserrat share their encyclopedic knowledge of local cuisine with guests while their daughter, Núria, cooks traditional Catalan dishes to an extraordinarily high standard using fresh produce from the nearby Boqueria market. Ignore the menu—just follow their recommendations and order whatever's in season. The restaurant is decorated with original works by a slew of luminaries, including Miró and Dalí, both former patrons. Spain's King Juan Carlos celebrated his wedding anniversary here, and regular guests include politicians and visiting Hollywood celebrities.