Aha! Inside.

This image was rendered using a process which fairly accurately simulates the indirect bouncing of light from surface to surface. The bottom of the upstairs floor is slightly lit from the sunlight on the first floor; the ceiling on the top left is lit by the white wall just below.

Again, notice the tint, reflection and refraction in the glass.

If you’d like to take a walk (or fly) around this house, here’s the VRML version. The Live3D ‘point’ option is very helpful here. The porch rail along the front right was lost in the conversion from CAD to VRML.

(A slightly interesting characteristic of the process used to render these images is the lack of a camera shadow or reflection. As if the viewer were only there in spirit...)