In reply to TFunny:
Obviously Paris if you want to be close to Font. Paris 14 Orsay has the famous Toit d'Orsay a short walk away if you're aiming for a thesis in hard roof climbing, as well as a very small bouldering site with circuits. But it's not ideally situated for getting to Font, you'd want to be near Gare de Lyon which is where you catch the train to Font, so Jussieu or Paris Diderot. Those are all excellent universities as well. Still, it's a bit of a trip to get to Font from Paris and then from the station to the boulders but with a bike it would be ok.
Probably the suggestion of Innsbruck is a good one. Or anywhere in the Alps with good train connections. The app ClimbingAway is very good for finding crags in Europe using a map and you can set the filter to show bouldering only.