I'm really surprised by how great this place was. It's very small and sort of hidden, but it is excellent information on people who were in the resistance in Vienna, as well as those murdered (Jews, gypsies, gays, disabled people, political prisoners, etc).
They had English translations throughout the exhibit but granted more details were in German (but for the most part you got the gist of it from the English).
At first I thought this would be similar to the Documentation Centers that I went to in Nuremberg and Berchesgaten, but it was very different (and free!).
Well worth a visit.