My Imaginary Cities

I have been trying to push for more complex environments, trying to explore several aspects of traditional Classic Painting Style, while figuring out specific colour moods, related to tonal values + lighting setups. In other words, i'm trying to simulate an historical style, using digital tools (Photoshop) to get it through.
Then, i've been exploring it mixing different (imaginary) eras. Posting the results i got so far: