Kiwanis Park in West Des Moines has a playground, half basketball court and a small shelter with one picnic table. I wasn't able to get a photo today of the separate play structure for ages 2-5, but it looked great for little kids.
Play Structures: Ages 2-5 & 5-12
Surface: rubber
Swings: traditional, adaptive, toddler
Restrooms: portable
Parking: easy street parking