I second what the others have said here regarding AJS station kit. There are so many buildings, station shelters, station houses, platform canopies, and other details you can put down to make quite unique stations. You don't indicate where you are located, but even in the US and Canada, there is no reason why you can't use buildings from Europe as it's not uncommon to see a bit of everything depending upon the population that settled the area, or the style of the neighborhood where the stations are built. You do have to keep in mind though that many railroads did have some utilitarian platforms in the modern times. These make use of concrete, steel, and glass while those from the Victorian period are a bit more fancy.
John