Suggestions for places to take the wife and kids

hi guys, i have my wife and kids joining in a couple of days for a short - mainly to look at schools for the kids.
I also wanted to to take this chance to show them around and make sure they have a good time. I have already looked at the Riyadh map, but would love to hear some suggestions. my kids are 4 and 6.

There are lots of fun activities for women and kids in and around Riyadh. What kind of fun activities your kids like?

There's Salaam Park, the Zoo, Fantacy Land & they all come with picnic spots & many parks in Riyadh. & there are  plenty of malls too with lots fun for the kids on the amusement floor & the rest of the floor shopping for the wife:)