"If you are a fan of all things fish, look no further than Estimar, hidden down one of the tiniest alleyways in Barcelona's El Born 'hood. Chef Rafa Zafra is an El Bulli alum, but these days, he’s less about molecular gastronomy and more about conveying his passion for the sea. The shrimp carpaccio is a standout dish, as are the razor clams, the grilled Cap de Creus shrimp, and the whole grilled sole. Portions are small but expensive, so be prepared to order generously and pay accordingly." - Isabelle Kliger, Gemma Askham