One of the most powerful Benedictine Abbeys of Carolingian Europe. This abbey owes its origins to the relic of Sainte-Croix and was built and renovated during the 8th and 11th century. Immensely rich, the abbey had its glory years until the Hundred Year war and was ruined during the Religious Wars and finally completely destroyed during the Revolution. Its famous octagonal tower known as Charlemagne's with its remarkable Gothic sculptures is classified among the major historical Poitevin sites of the Middle Ages. Visits of the abbey and lapidaire museum. Also worth visiting: the 16th century markets and ancient houses.