The town itself is surrounded with an enceinte.
A second "enceinte" was defended by a moat cut into the rock.
The enceinte was the castle's main defensive enclosure, and the terms bailey and enceinte are linked.
The entry to the double enceinte is defended by two cylindrical towers and a flying bridge, flanked to the north by a bastion.
The "enceinte" is constructed of bricks with pebbles arranged in places in the shape of fern leaves.
The enceinte had a width of 78 metres and a depth of 86 metres.
The fortified "enceinte", dotted with towers, forms an almost perfect square.
Numerous buildings must have existed the length of the "enceinte".
