These days so many of the cragging areas in Europe have been bolted,that I'm not at all sure about which areas still offer much in the way of trad climbing options. While I have never been there myself, there are some granite areas in southern Germany that may still provide a selection of trad routes--the Fichtelgeberge and Steinwald. Further north, as mentioned above, the Pfalz sandstone area in the Rhineland still has plenty of trad routes and is a stunningly beautiful area. There are both single and multipitch options. Also in that area and a bit further south, but still close to the French border, the Black Forest region has crags of a variety of rock types, several likely still with trad climbs---the Battert, a volcanic crag above Baden-Baden is one that I am familiar with, offering a dense collection of mostly one and two pitch routes. . Of course, much further north and east in Germany are the 'tradest' of crags in the Elbesandsteingebirge outside of Dresden, where even cams and nuts are not permitted!!!
In Switzerland, when we were there in the '80s, the wonderful and primarily granitic crags in the Grimsel/Furka Passes area were primarily gear protected with occasional bolts, but I believe that at least some of those routes have subsequently been retrobolted--though hopefully a number of at least semi-gear lines still remain. Definitely some of the best and most beautiful climbing that I have done, though most climbs in that area are multipitch.