The abbey of Santa Maria Assunta was built some time between the 12th and 13th centuries, and copies the solid, compact scheme of S. Liberatore a Maiella. The faĆĀ§ade has an elegant Benedictine portal surmounted by a simple monoforium window.
The basilica interior of a nave and two aisles with an exposes truss ceiling, present round arches supported by columns. In the central presbytery area, raised and barrel vaulted, the tabernacle (1223) and the altar below it, the Paschal candle and the abbey pulpit (1184) are all carefully balanced elements.
The square case ambo is an imitation of the S. Pelino cathedral prototype, made in 1180. A foliage cornice and rosettes decorate the pluteuses.