Only its massive outer walls, towers and ramparts are left.
Several old houses, some remains of the medieval ramparts and the Tour de l'Horloge, an ancient gateway, are also preserved.
It was formerly fortified, but all the ramparts (save the Fort Carre, built by Vauban) have now been demolished, and a new town is rising on their site.
The same afternoon the guards in the streets and on the ramparts were doubled; on the following morning the gates of the city were closed, powder and bullets were distributed among the city train-bands, who were bidden to be in readiness when the alarm bell called them, and cavalry was massed on the environs of the city.
According to some, he leapt his horse from the ramparts, and alighted uninjured, though the horse was killed by the fall; others say that he was prevented from joining his comrades, and discovered the treachery while waiting without the gate.