I thought it would be an interesting picture to turn into a piece of zentangle-inspired art (ZIA), partly because so much of it is very plain surfaces. What would it look like crammed full of patterns?
I managed to trace the image reasonably well onto some art paper. It's 15"x13". I started with some masking fluid for the very white areas, and did some ink washes. The masking fluid was not one of my better ideas and I'll save it for canvas or another type of paper!
Here it is, partly done, pattern-cramming in full swing:
Next step, almost all the tangling done, but no shading yet. At this point I thought it looked like quite a jumble.
Oh the wonders of shading! I had to darken some areas and lighten others, then re-lighten and re-darken, trying for the right tone. Lots of darkening in the upper left; maybe more is needed? Here is the (almost?) finished "Palazzo".