There are halos surrounding the structures that were backlit. This is a sign of over tweaking of the tones. Other than that, there's also evidence of lack of control in perspective i.e. the tilt in horizons and vertical lines. These tilts are not strong enough to accentuate a dynamic feel of the structure but is enough to make the photos appeara little disconcerting to view. Colour wise, there's a few which I feel is pretty weak but that's highly subjective.