Ruben, this is a picture I have looked at many times.
I like the explosion of light, the subtle textures on the concrete that are picked up. The subdued, but not weak, colors all add to my pleasure.
The iron grill/rods seem to me to be some construction work going on. Pouring of cement. Is that a wood
scaffolding? Lovely rusted colors.
But for the life of me, what is it?
Take care.