The fortress has eight "courtines" or stretches of remparts. Some of those are open with an amazing view on the renaissance lodging -end of the 15th. From the top of the ramparts, you can also see the surrounding park. All towers are not alike. Some have kept their roofs from the Middle-Ages, with a "poivriere" style roof -a pepper grinder look- and are covered with red tiles. On the inside of the ramparts, the roofs show a flat side. This is meant to follow the convex shape of the ramparts which is a particularity of Ainay-le-Vieil. The open "courtines" have a defense purpose. In case the enemy set foot on the remparts, they would become easy targets. Some towers have maintained their XIIIth century with arrowslits or narrow openings from which arrows could be safely shot, and ammunition storage space.