General [US/CAN] Free Castle Mini Build on September 12 By atmail35Posted onSeptember 11, 2013September 12, 2013Time to Read:-words On Thursday, September 12th, visit your local LEGO Brand Store starting at 5PM for a FREE Castle Mini Model Build. Children aged 6-14 can receive the elements to build a Castle turret. Quantities are limited to approximately 150 per store.