360° panorama by Brian Richards.
Click the image to open the interactive version.

The Royal fortress of Chinon , like many castles , is built on a rocky outcrop overlooking Vienne and the city. This strategic position allows it to ensure control of the passage over the Vienne, a tributary of the Loire . The village has developed below, on the shore. Gradually, the space was structured into three distinct parts, which the kings called their “three castles”, and which are stylized in the form of three towers on the coat of arms of the city. Thus, from west to east , the spur is blocked by a series of ditches - dry moats - which separate the three castles: Fort du Coudray, Chateau du Milieu, and Fort Saint-Georges. Each of the three castles has an independent enclosure. It is in the main castle, the Ch^ateau du Milieu, that the main residences and the Saint-Melaine priory are developed.

http://www.360cities.net/image/chateau-du-chinon-france