Opened in 2004, the Parish Museum of San Pietro a Siepi, located next to the sacristy, is spread over two rooms, one of which is dedicated to the chapel of Madonna dei Sette Dolori, then consecrated to the Sacred Heart. With a setup classicist, designed by the architect Lorenzo Santoro and Salvatore Milano, the museum houses important art collections dating back to the XV-XIX century, coming from the church and from donations. This cultural space not only preserves the artistic and religious patrimony of the parish, but also as a place of study and enhancement of the artistic tradition that has marked the history of the community of San Pietro a Siepi.