Swing inland a little to Le Mans...
La Baule and the Carnac Alignment might be worth a look-see...
Heading in the opposite direction, Verdun. Ossuary impressive from the air, sobering from the ground.
Bit longer - La Rochelle...
Unfortunately NW France, whilst nice (I have a gaff there!) isn’t particularly inspiring from an airborne scenery point of view. Need to head a bit further south for the interesting bits!