Mont-de-Marsan

Mont-de-Marsan grew at the meeting of the Douze and Midou, whose waters form the Midouze. The viscount of Marsan established a fortified settlement here, using the confluence to protect his castle. In 1344 Gaston Fébus strengthened the town's defences and built the castle of Nolibos. The Wars of Religion later brought rival armies to Mont-de-Marsan, which was taken by Blaise de Monluc in 1569.