Catalonian modernism is reflected in its architecture in Barcelona, Spain in particular and in Catalonia in general. At the end of the 19th century and the beginning of the 20th, modernism extended all over Europe.

Antoni Gaudi, Lluis Domenech, Montaner and Josep Puig and Cadafalch were all very important to this trend, and the Sagrada Familia of Antoni Gaudi is the most representative work of modernism in Barcelona, Spain. Also important is the Palau de la Musica ( Music Palace ).