I knew it!!! This was one of my first choices but then looking at the angles I had it didn't work on the pictures I was cross referencing!!! Quite a hard one this week imo
And proof that the number (or percentage) of incorrect answers is not a good measure of difficulty!
I think it's reasonable to assume that, since nozzacook was on a challenge, he will have been standing on a platform (rather than hanging around outside risking missing a train) to take that photo. This limits it to stations with an island platform and at least one other platform. The reflected late January sunset (I assume!) gives some clue as to the direction we're looking in. I was fortunate enough to find an image showing the large blue building and the poster board.