My grandsons particularly liked the 'gravity art p...

My grandsons particularly liked the 'gravity art project' (my name for it. ) Be aware that tickets (free) are needed to get a time slot. Tickets are given out at 10 AM and 2 PM. The time slots are in 10 minute increments.
If you are interested, get in line early; or plan to get there to get in line for a ticket, go explore and maybe have lunch, then come back for your time. One ticket is awarded per person in line, so if you need three tickets, three MUST be there when tickets are handed out.
TIP: Ask the workers for suggestions about swinging the board for a large design. They are quite helpful.
ALERT: Entry is expensive; so check out the website for ticket pricing and consider a membership or family membership.