do you mean a picture of a real building mounted on 1/4” foam board? if so, many are quite good but, it depends where/ how you use them. in most cases i’ve used them as background buildings, to increase the depth of the city. i’ve added an inch or two inch roof, so i could add some 3-dimensional details, like a water tank, vents, a roof access and a billboard. also have added some greenery to mimic vines. All of that to detract the viewers eye that it’s a flat. Works well (sorry for going on and on if this isn’t what you meant).