I picked up several of these for my 1905 era, city based layout to add a bit of detail to some of the buildings. The parts are thin and delicate, but once they are glued up (I used ACC) they are a bit stronger. As a basic detail, especially in the background, they add a lot of bang for the buck.

These are great, but some small parts. Put them together and spray black and perfecto.

I've used several of these I'll but more, thin plastic but that's good which makes it look less toy like and more to scale. Albeit the railing for the fire escape is a little tall a little over 4 in scale. Not difficult to assemble and works in several eras of buildings.