I want to go to Berlin, Dresden, Gorlitz and Krakow this Feb. (yeah, I know, nothing like off-season).

I was thinking of taking the train from Berlin to Dresden, overnight there, then train to Gorlitz, overnight there, and then take the train to Krakow.

Should I spend 2 or 3 days in Berlin? I like art, but what I like best about Europe is the old buildings. It's my understanding Berlin doesn't have many of them.

Also, should I take the train from Gorlitz to Krakow or simply take the train back to Berlin and fly to Krakow?