La Porte Bleue by GlennH

I like this too. There’s a surprising degree of interest here, including complementary warm/cool colours, a variety of analogous blues, the pleasant geometric patterns, and an unexpected depth in the superficially flat structure – leading to interesting shadows and even some perspective effects in the upper corners. And of course all that luxuriant texture…

I find the slight pincushion distortion at the bottom mildly distracting, but normal people wouldn’t care. I seem to have a much higher tolerance for barrel distortion than pincushion distortion.