For ages 9 to 12 years. You are a child. A really great child. Our future is in your hands. Here is your challenge: Fill a gaping hole in the ground (it takes up a whole street) with a tall, efficient, awesome building -- one that will truly scrape the sky. This is a far-reaching adventure filled with real-life experiences that will cause children's hearts and minds to soar. Ages 7 to 13