The church is built on the Latin Cross plan, with the nave ending in an apse housing the high altar. The aisles support the ceiling. The interior is very sober, apart from the richly decorated tabernacle and Paschal candle in Gothic style. The choir contains frescoes by Antonio Martini di Atri dated 1377. The church, which was restored in the 1950s, is surrounded by a park from which the rest of the abbey is accessed.