Audenarde

Fortified in the 13th century, the town of Audenarde (Oudenaarde in Flemish) was given bastions by the French in the 16th century. Following the Spanish occupation, Audenarde was aquired by France in 1668. In 1670, Vauban improved the defences, building a system of sluices for inundations.

He also created a front of 4 bastions on the southern bank of the river Escaut, with a flooded ditch, a covered way and demi-lunes. The fortifications were demolished in the 18th century, but there are some remains of them today.