You are on vacation, and on vacation you see the Eifel Tower. As you stand looking at the Eifel Tower you decide that you are a better architect then whoever it was that built that thing. It has now become your new goal in life to make a bigger tower then the Eifel Tower. Use your mouse to move the white balls to the existing structure to start building on it. Make sure you have a strong enough base as you keep adding more and more balls to the structure and build your tower all the way to the sky.