We’ll be bringing out our blocks and engineering sets for family building time! Between the hours of 10 a.m. and 4 p.m. Treehouse visitors can design a paper spacecraft in the Art Garden, raise a castle tower in the Days of the Knights exhibit, and engineer whatever they can imagine with the Rigamajig sets around the base of our big tree. This event is free with your timed admission ticket or membership and does not require a separate ticket.