My little guy just loves his Lego's. We spend countless hours building things, or rather I build and he tears apart. Actually that was the case until more recently, I have been amazed at how well he can build. Often I will get a row or two started and he will put together a complete building. Wythe and I built the Eiffel Tower one day, at least our version. We also built the leaning tower of Pisa, but for obvious reasons couldn't get it to stand up for a picture.