A Harvard grad named Brian Berg who builds houses of cards currently holds the record for the largest playing card structure in the world.. He may not have (as he admits) a full deck but he certainly uses more than one of them to create his masterpieces. He does his card tricks for casinos in Las Vegas, Disney, anyone who will pay, around the world which he says adds up to more than he would make as a real architect. And, he says, “If a wing of his architecture falls down he doesn’t get sued not to mention, knocking them down is fun. “