Barcelona, capital of Catalonia. Founded as a Roman city, it became the capital of the County of Barcelona. After merging with the Kingdom of Aragon, Barcelona continued to be an important city in the Crown of Aragon. Besieged several times during its history it has a rich cultural heritage and is now an important cultural centre. Particularly renowned are the architectural works of Antoni Gaudí and Lluís Domènech i Montaner.