Castles were often to be found in towns - generally because the town had grown up around an early form of the castle. This meant that the castillion had three layers of defence. A attacker had to breach:
The illustrations on the right show the Viscomptal Castle at Carcassonne located against the Aude Gate of the City of Carcassonne. Defensive features typically included:
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Below are some of these features seen at Carcassonne
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