The helpline posters did such a fabulous job in helping with my last German itinerary that I hope you can advise me again.
My spouse and I will visiting Germany in May and we love to see art and architecture, especially in non-touristy places. We can only travel by public transportation. We prefer art in situ (in churches, etc) rather than museums. Of course I will research with guidebooks, but I find asking other travelers to be especially helpful. Since we concentrated the Northern and Eastern regions on our last trip, we will focus on Southern and Western areas on our upcoming visit. We plan on seeing the Aachen cathedral for certain. We love medieval art and architecture as well as Renaissance. I do enjoy contemporary art, but I see a lot of it at home so I don't seek it out when traveling. I'm not crazy about Baroque, Roccoco or neoclassical art. Some palaces can be wonderful, but I can't stand the ones full of nothing but shiny things like chandeliers and mirrors. We love to hear classical music and opera in local venues, if affordable. What would you recommend?