The external appearance of the church is of a
Romanesque fortress of stone from
Montjuïc (the crypt), topped by a monumental
neo-Gothic church accessed by two grand outdoor stairways. The upper church has a central floor with an octagonal
dome on eight
columns. The dome is crowned with an image of the
Sacred Heart; the original work was by
Frederic Marès (destroyed in 1936) and replaced in 1950 with another by
Josep Miret. The upper church is square with three apses, a large central tower, and four lower towers marking the four corners of the square, and statues of the Twelve Apostles sculpted by Josep Miret. The main facade has three sections, the central wider, chaired by the figure of the Archangel Michael in the arch of the main entrance, and John Bosco in the
pediment above. Over the left door is the statue of
Teresa of Ávila and over the right,
Marguerite Marie Alacoque. Above the door is an open gallery of arches with tracery. The façade of the crypt has a richly decorated
tympanum with sculptures by
Alfons Juyol i Bach following the design of
Eusebi Arnau. The sculptures represent the
Virgin of Mercy,
Saint George, and
Saint James, the patron saints of
Barcelona,
Catalonia, and
Spain, respectively. The crypt facade consists of three
semicircular arches on columns, inserted under a larger semicircular arch, originally decorated with a
mosaic of the
Holy Trinity by
Daniel Zuloaga (destroyed in 1936). In 1955 it was redecorated by the Bru Workshop of Barcelona; the work depicts an
allegory of the devotion of Spain, represented by its patron saints. ==Interior==