I think you lucked out on your GWU tour–we have done 2 regular tours (1 junior year and 1 right before admitted students day) and we never got to see the inside of a classroom !!! We got into the lobby of the new engineering building. We did get the chance to see dorms on Admitted Students day (and D24 has a friend on campus so we got to see her room). We expected a more BU feel with the urban campus but were pleasantly surprised by how cohesive and inviting the GWU campus is. (she made her choice to go to GWU after our 2nd visit/Admitted Students day)