Considering the fact that a Creative Playthings turtle stands right next to the "Swiss Cheese", I can be fairly confident in saying that the yellow piece is also by Creative Playthings. It's so amazing that some of these old structures still exist. If any other readers are aware any other structures like this that are still around (specifically whole or partial Fantastic Villages) send the info my way. I'm not always able to respond right away but I do read the comments left by my readers. Thanks so much.