[NYer]

There was a Muslim mini-state in southern Europe during the post-Carolingian period, centered on Fraxinetum. To this day there are towns in southern Provence with Muslim names.

Fascinating! I had no idea. Thank you for the information.

[Heatseeker]

There's an area north of St Tropez known today as 'Les Maures' (i.e., 'The Moors'). They've got a tourist site at www.ot-lalondelesmaures.fr/us.

That might be the best known but there are a number of others.