I'm genuinely curious what kind of real-world construction and materials are used to create the "blocky" textured buildings and architectural elements. Like is

I'm genuinely curious what kind of real-world construction and materials are used to create the "blocky" textured buildings and architectural elements. Like is it regular construction with a bunch of plastic "boxes" covering the outside, with some kind of printed vinyl coverings? How is it made heavy-duty enough both without cracking as well as without the printed texture scratching off or fading? What do you do about all the rain that collects on the top of every box? Is there some kind of drainage system? I'm sure these are solved problems -- I'm just curious what the solution is.