The church is vast and narrow (22 m) in proportion to its height (32.4 m). The nave was raised to its present height by the second architect, Huguet, altering the proportions of the church and giving it its present aspect. Its interior gives a sober and bare impression by its lack of ornaments and statues in the nave. The ribbed vaults, supported by compound piers, are closed by ornamented keystones. Light enters the church through ten stained-glass windows of the clerestory and the tall, traceried windows in the side walls and the transept and through the two rows of lanciform windows in the choir. The choir extends into two-bay transepts and consists of five apsidal chapels, with the central one projecting.