Colour or black and white, use a slow film. Buildings don't move, and you probably will be using a tripod. My vote is for Ektar 100 for colour and FP4+ or Pan F for black and white. The grain is so fine on Ektar 100 that I can't see it in my grain focuser. I have to focus on a line in the frame. Ektar is the smoothest negative film I have ever seen.