We spent almost five hours here with kids ages 6, 10 and 13 and were never board. The tinkering station was the group's favorite. I think we spent over an hour there. The room has long tables with all kinds of tools and "construction" materials. Great repurposing of recycleable items! The kids built a robot and a doll house. You can take your masterpiece home or leave it there on display.
We also enjoyed digging for Dino bones, driving a mata bus, playing at the water tables and turning ourselves into butterflies. I highly recommend visiting.