I don’t have Maine Coons, but I do have 5 fat boys, 2 which are large 30lb cats. Most cat condos and trees have been way to small for them. Well, this is perfect!! They have no problem fitting in this, multiple cats fit at one time, and they LOVE it!! This is a completely solid piece, and the quality is 5 stars. I see this lasting for a long time. So if you have larger cats, this is the perfect choice.