The fort! Jeff had fun building this fort the boys. I was a little skeptical,worried it might fall in on them; however, he reassured me to trust him. Of course, it never fell. Actually, Sat. morning they made it into a tunnel and the boys were able to crawl through. Preston loved the snow. He would run out there and just start rolling around in it. He made several snow angels, too. He had to swing, also.