I did what Ledi did first, I adjusted the levels. Then I used Select > Color Range, and grabbed the highlights, and put them on another level. I used AutoFx to do tonal sharpening, deepen blacks, and some warming. Then I dup'd the highlights level, erased the selection for the clock faces, then set one to darken and one to multiply.
I think you could do a lot with this photo, like more of a day2night look even. There is always potential!
And, Thanks!
Cherilyn