Here and there I've had posts about St. Louis' City Museum. There is nothing like it in the world and it's hard to describe. (The Wikipedia article gives it a good try.) Mrs. C and I took Ellie there yesterday. She gave us a hard time and I got little shooting done.
The child is four and a half. She has complete social confidence and little sense of fear. The building is a maze of tunnels and big climbing things, and on three occasions she ran off from us to explore on her own. Each time we had to get museum staff to help find her. Each time we gave her a stern lecture but to no avail. She needs to learn some limits.
The bottom two pictures are from a new area that has a large net suspended over giant Legos. Ellie spent twenty minutes bouncing around the net (that's her, just up and to the right of center, in the sweater with horizontal, brightly colored stripes). I walked under the edge to get some video but some kid kicked me in the head. Time to go home.