Well, basically the entire inventory of the pre-war museums.
Ah, I remember now. We saw some stuff like that in Warsaw, indeed.
It is understandable. Warsaw was razed to the ground and lost nearly everything, while Wrocław had to be punished for being a German city. :):):)
Here or there, whatever. As you can see, people who want to visit a museum do it both in Wrocław and Warsaw. Poland isn`t such a big country that travelling poses a problem.