"As a science buff and having grown up in the "Age" of the Space Shuttle, I knew I was going to buy this as soon as I saw it on the shelf! I've only built the shuttle, but but there was nothing especially difficult about the build, I think it took me about 2 hrs, but I wasn't really paying attention to the time. I won't be playing with it, but it seems sturdy and should hold up well in younger hands. My only complaint is I wish it had landing gear, or some sort of display stand."