This guide coves both the backcountry as well as the city of Barcelona. It includes a section on eating and drinking like a Catalunya local, investigates the splendour of Gaudi's architecture, including La Sagrada Familia and Parc Guell and the bizarre Teatre-Museu Dali in his birthplace, Figueres.

https://www.amazon.com/Lonely-Planet-Catalunya-LONELY-CATALUNYA/dp/1740593812