Background seems to differ quite drastically between the states of the city: the second chimney of the bigger frontal buliding, as well as the left-hand building behind it all. I should also note that the frontal building have a very Escher-esque design which pain my head when I try to figure it out.
Awesome! Reminds me of the Nibelheim piece you did. The detail on the building is incredible. Only thing I would note is that the time on the clock is exactly the same - I suppose a clock is always right twice a day, though.