This kind of tripartite window was a popular motif in sacral architecture, found in many architectural styles, including Romanesque and Gothic.
This model is based on an idea I had a few years ago where the windows had deeper relief and the whole model was three-dimensional. You can spot much simpler designs based on a similar idea in some Building Block Unit variants as well.
The model you see here represents my free-folding style which differs quite a bit from my clean folding style. I use it when designing new models or improvising.
Folded from a sheet of paper I found in my stock. It was together with other Elephant Hide sheets, and it felt like EH during folding, but the pattern differs a little from other sheets of the same color I have. Maybe it’s from a different production batch. The sheet was a 20 cm square, the only one of this size, which also suggests a different source than my other sheets. Maybe I got it from someone?