As the final two families set out on the last leg of the journey to Los Angeles, they are each given a cube. The sides depict clues to a Los Angeles landmark where another cube can be found. Once they collect four cubes, they will be able to form a picture of the location of the final challenge. There they must race to finish a cube puzzle depicting the places they have visited. But most of the pieces show them in places they have NOT been. The first family to finish wins the $100,000 grand prize.
—scgary66