The Principato of Lucedio, with the walls that enclose it, presents itself today as a large and modern agricultural company. Of the ancient medieval monastery, built by the Cistercians in the 12th century and then enlarged during the period of maximum renown and economic prosperity of the abbey (13th and 14th centuries), notable architectural structures have been preserved: the unusual octagonal bell tower, resting on a pre-existing square base, in Lombard Gothic style; the cloister; the beautiful chapter house (mid-13th century) with stone columns and early medieval-style capitals; the evocative Sala dei Conversi with slender ribbed vaults resting on low columns. The ancient abbey church (which dates back to the years 1150-75), which had now become battered and unsafe, was demolished to make room for a new church built in elegant baroque style between 1767 and 1770. It was the monk-architect Valente de Giovanni to build the new building (which has now become impracticable and in need of further restoration work, following the safety measures recently carried out). Inside the city walls there is a second church: the so-called church of the people, built in 1741 for sacred functions intended for peasant families and the common people living in Lucedio. Reduced to an agricultural warehouse, the church - designed by Giovanni Tommaso Prunotto, Juvarra's collaborator - can be admired for its late Baroque lines.