On first sight, it is a simple photograph. However, I think that it is a little bit more subtle than may be expected on first sight, which is the main reason why I like this photograph. The red square is a reflection of a red building opposite this glass facade. I carefully positioned myself and the camera so that the red is exactly confined by the borders of the windows in the lower left corner. This specific point of view left very little room for the remainder of the composition. I know that the perspective is not corrected, but I like the diagonal direction that is thereby introduced. At least for me, this composition makes the eye move to the bottom left, to the red square. Another interesting detail because usually the eye is guided from the front to the back, from the bottom to the top. Is your viewing experience different?
Enjoy and have a nice day!