There is a really cool, multi-level (like 5 levels) jungle gym we've taken our 18 month old in. We keep him on the lower level but he has a lot of fun. Our three year old could spend over an hour playing in it. It's called mission control.
There is a smaller children area there but I'm not sure of the age suggestion for them, IMO I would say that there is nothing for a 1 year old to do there
Jumping for 4 not sure about the 1
Thanks! Your answer is awaiting moderation.