Abstract Pattern

I didn't notice them but my wife had a keen eye for these patterns. We shot a whole series of these and the following is my favorite: it shows some repeating structures without being geometrically perfect and I like the fade-out of focus to the right which makes it look like a receding wall - which it isn't.
Developed in black and white (but there was not much color to begin with) it remembered me a bit of some paintings by Gerhard Richter we just visited before in the Neue Museum in Nuremberg.