Europe has three alcohol belts. The vodka belt in the northeast, the beer belt in the northwest and the wine belt in the south.
Also included in the wine belt here are Israel, Lebanon and Armenia, where wine is often drunk. Notably, the wine region is the least prone to alcoholism; the people there like to sip their drinks with meals, and have cultural and genetic defenses against heavy drinking. All brewed fruits are considered wine: that includes not just grapes in the whole region, but apples in northern Spain, France and England, as well as Pomegranates in Armenia (if you haven’t tried pomegranate wine, get yourself a bottle immediately).
Fruits, not growing in such large quantities further north, means that grains have to be brewed and made into beer, or potatoes and grains mixed and made into vodka. Heavy drinking prevails in the vodka and beer belts, though it’s far worse in the vodka belt, where alcoholism is almost a cultural norm among men. In fact, the place where Orthodox Russian civilization begins and Western European civilization ends (this can be somewhat blurry, mind you) is at the end of the beer belt, in Poland, Finland and the Baltic States.
All of these regions overlap, and they have their origin in climate and geology, though such climactic differences have resulted in some rather large cultural differences on the European continent.
My ideal part would be an overlapping region of the wine belt and beer belt, my two favorite drinks. Southern German, the Czech Republic, Austria… these regions also make the best beer, because they can experiment more with different temperatures and variations including fruits.