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.
The old ramparts and bastions (excluding the circuit of the citadel of 1591, now in great part demolished, in the south-east) make an enceinte of about 41 m., but the enclosed area is not all occupied by streets and houses.
The town is surrounded by avenues, which occupy the site of the ancient ramparts, remains of which are to be seen on the north side.
Since that year the ramparts have been levelled and their site occupied by public promenades and gardens.