The windows can be displayed as the 2D prints on the tower or you can make them 3D with the included extra parts. I chose to make them 3D.
My apologies for the bad photography.
Here are the two components of the 3D windows:
Beginning of the construction:
A completed window:
Windows attached to the tower part:
Tower closed with windows inserted:
To me it looks much better with the recessed windows.
