Canosa 'castle' is actually the acropolis of ancient Castrum Canus. The three great towers are the ruins of the eponymous estate located atop the hill overlooking the valley Ofantina. Originally a place of worship and pre-Roman fort, built of tufa blocks was rebuilt as a bastion of the same materials by the Grimaldi. Last owners, from 1856, were the Prince of Canosa Capece Minutolo of Naples, and remained until 1948. The wear of the blocks that compose it and the color denotes the passage of these various civilizations that have developed the structure in different epochs. The castle has also reported damage after the devastating bombing of the Second World War. Along the steep hill of the Acropolis, there is the old part of the country, with its narrow streets and staircases. At the southern base lie the remains of a Roman amphitheater.
Saint-Georges de Boscherville Abbey is a former Benedictine abbey. It was founded in about 1113 by Guillaume de Tancarville on the site of an earlier establishment of secular canons and settled by monks from the Abbey of Saint-Evroul. The abbey church made of Caumont stone was erected from 1113 to 1140. The Norman builders aimed to have very well-lit naves and they did this by means of tall, large windows, initially made possible by a wooden ceiling, which prevented uplift, although this was replaced by a Gothic vault in the 13th century. The chapter room was built after the abbey church and dates from the last quarter of the 12th century.
The arrival of the Maurist monks in 1659, after the disasters of the Wars of Religion, helped to get the abbey back on a firmer spiritual, architectural and economic footing. They erected a large monastic building one wing of which fitted tightly around the chapter house (which was otherwise left as it was).