Kidstowne Playground in Apex. What a great place for a play date! It's called MacDonald Woods Park.
This is perfect for when it's hot out, as it is very shady from all the beautiful, grown trees that cover the area. I don't know what they call the material they put down, but it's a squishy flooring that's perfect for little trippers! My kids fall all the time, and they fell no less than five times each this morning, and NO BOO BOOS!
There were two separate jungle gyms (one for bigger kids and the other for littler ones), a little sandbox (very clean sand), a merry-go-round (pint sized), swings for both little and big kids and so much more. I'd recommend going on a play date there, as most of the moms seemed to live in the near vicinity and weren't very social with us or our kids. I think, though, it was just an off day. We met a great mom there, of twin 2-year-olds, who was incredibly friendly.
Also very cool, which we had no idea about when we were there: there is a great greenway that bisects the eastern side of the park and leads all the way to the US Hwy 1/64 pedestrian bridge, and that leads to the Kids Together Play Area at Marla Dorrel Park, which I LOVE!
HIGHLIGHTS: Shaded park, good for kids toddler and preschool age due to the variety of playground equipment, love the flooring on the ground. Also, there is apparently a basketball slab and picnic tables.