26x17 cm (A4) / 36x23 cm (A3) / 45x29 cm (A2)
If I remember right, it's the wall of an UniCredit Bank in Budapest. As I was squatting there, some people looked at me so oddly. Have they never seen a resolute photographer before? :) As people occasionally walked by, I needed to wait there for the right subject for about 30 minutes.