Barcelona Modernist Architecture

The most famous work by Gaudi in Barcelona, the unfinished La Sagrada Familia basilica is probably Barcelona's most famous building. An obvious number one for this list of architecture in Barcelona, not everyone likes it, but everyone has to see it.
Read more about La Sagrada Familia.

The Hospital de Sant Pau is fully functioning hospital, complete with nurses and walking wounded, but it is also one of Barcelona's most beautiful sights. Built by modernist architect Lluís Domènech i Montaner, Hospital de Sant Pau is so close to La Sagrada Familia that you have no excuse to miss it out.
See pictures of Hospital de Sant Pau.

Another project Antoni Gaudi left unfinished, Park Guell was intended as a residential area for Barcelona's rich and famous, until the new (at the time) Eixample district usurped his plans.

Though the Catalans call it Parc Guell and the Spanish call it Parque Guell, Gaudi always intended 'park' to be spelled the English way.
See pictures of Parl Guell.

The Palau de Musica Catalana is a concert hall designed by Lluís Domènech i Montaner. Unfortunately, the front facade has now been covered in glass, but walk around the side and check out the nice detail at ground level, such as the mosaic ticket office.
See pictures of Palau de La Musica Catalana.

Casa Lleó Morera is one of the three buildings that make up the Illa de la Discordia or 'Block of Discord'. This one was designed by Lluís Domènech i Montaner.
See pictures of the Illa de la Discordia

Josep Puig i Cadafalch's contribution to the Illa de la Discordia.
See pictures of the Illa de la Discordia

The Gaudi-designed building in the Illa de la Discordia and one of two buildings by Gaudi on the Passeig de Gracia.
See pictures of the Illa de la Discordia

A little further up Passeig de Gracia (on the right-hand side this time) is another building by Antoni Gaudi.
See a picture of La Pedrera.