I dug out today another Manhattan skyline shot. On a cloudy day, sky was flat and boring, and dominating the shot. I processed it as single image HDR in Photoshop just to even it out and accent details in the buildings on the other side and of wooden constructions in the foreground. With that fixed, I went back to Lightroom to add some contrast by pushing almost every slider in Basic and Tone Curve panels, and darkened the sky with Blue Luminance. It all ensured that crispy look I was looking for in the image.