Union Park's best feature is a working carousel, which makes it a fun place to take kids. Good luck finding it ... it takes a while to wind through the back streets of Des Moines to get to it. If you go to North High school, you're pretty close. I think carousel rides cost 50 cents, so it's a fun thing to do if the kids are driving you crazy that won't cost so much. Pair it with a picnic lunch.