A double header challenge sees the remaining teams build a tower as tall as they can in two hours. Then in one of the hardest builds so far, they must create magic from one hanging brick - a very careful measure of weight and balance.

The third elimination hangs over the team's heads as they are challenged with building a 3D art piece out of LEGO. With one team safe with Immunity, four teams go head to head to create incredible and beautiful 3D LEGO art.