Little Tikes Climb and Slide Castle

We got the Climb and Slide Castle for our two toddlers who love it and my seven year old likes to play on it as well.  It is great for little ones and wouldn't recommend it for any child over the age of 5. My seven year old is too heavy to really play on it but she encourages her siblings to play on it.  They can climb up and then slide down and/or crawl under it. There is also a wheel at the top for them to play with but I don't understand why there is a wheel it's not a boat it's a castle but they like to play with it regardless.  The Climb and Slide Castle really help develop my kids imagination.