Is there much here to interest a 3-4 year old?

My 3 year old enjoyed seeing all the planes and the play area is fantastic for children

I have seen many children here and most of them seem really interested in all the things that are offered here. Its definitely worth checking out. It might be a place to bring them time and time again.

There are facilities for young children. But it is more geared towards adults.

The children's area is very well done.

I took my 19 month old and he had a blast, lots of planes to see and there is even a children's section.

If they like planes, yes.