Every time I see something like that I see a city skyline too but the grain and grey gradient on this take it from 'ohh a city!' to 'wow...how distressing'. Congrats on capturing this concept so well
I don't mean this in a rude way, but it looks like snow and the siding of a shed to me. Perception, I guess. Looking at it in a smaller format, indeed, looks like a crumbling city. Poetic. Congrats on the DD!