It’s nearly impossible to predict what we or our children will retain as important memories. Duh. One of my best (strongest and postive-ist) memories is of the Museum of Science and Industry in Chicago. Back then, before whizz-bang, interactive museums, it had proto-things to do. And chicks hatching under red lights. And an echo chamber. And a walk through the heart. And jars of human fetuses (long gone, I imagine). But right about the time I hit adolescence it opened Mathematica.
What you cant’ see in this picture is the exhibit about conic sections, or slices through a cone:
This exhibit was a large enclosed tank into which you looked through portals in the sides. It was dark, filled with strings and colored narrow beams of light played over the strings and showed you the sections. Bach organ music was in the background. More than 40 years later, I still remember this. I still love both Bach and conic sections. That’s why when they announced a new museum in NYC I knew I’d have to go (even though they didn’t have a lot of cool pictures on the website).