The Diocesan Museum and the Chapter is in the city of Terni. The Museum is located within the Palace of the Seminary of seventeenth century origin. The architectural design was built at the initiative of Cardinal Francesco Angelo Rapaccioli in 1653. Even today you can see some original architectural details, such as: windows, alcoves and soffits ancient medieval. The museum houses a vast collection that includes paintings from the deposits of diocesan parishes. Among the most important works stand out the altarpiece depicting the "Madonna and Saints" by Marten Stellaert, "The Annunciation" by Agostino Masucci, "the praying Madonna" by Giovanni Battista Salvi said Sassoferrato and "The Circumcision of Jesus" Livio Agresti. The collection includes some of the Umbrian area artists - most representative of Lazio, including: Giacinto Brandi, Jerome Too much, Liborio Coccetti, Giovanni Francesco Speak, Calisto Calisti, Francesco Cincinnatus and many others. Of great importance it is also the contemporary art collection consists of works by Italian and international artists who have worked in the past in diocesan churches. The museum contains paintings of the gallery built in the eighteenth century depicting sacrificial scenes and the story of the prophet Jonah.