A bit dark for me. And I'm in a dark room with a calibrated monitor. It does add a certain gloomy mood. I think a little more exposure in the city area would have been nice.
I like the idea and the fact that there are no lights on the building does add to the harsh, abandoned/ apocalyptic feel to the city. It does come across as a very dark photo and a bit hard to make out what it is.
I get that you were trying to create a mood here, but for me, its just too dark. I can't make enough out. Maybe a few minutes earlier or later if the shot was taken near dusk or dawn could've given the shot more depth.
I can't explain it but this really appeals. I think it has to be the muted lighting and colour. I love the retention of detail in the buildings so that they're not silhouetted entirely and the blueish tones against the browns in the sky. Very cool stuff.