My daughter and I love Columbia park period it has a great Play place/boat and a bunch of good spides and one Big giant Slide. The park is also in a great Location, right On the River. If you cross the bridge from the park, it is a great way to get into downtown or the old mill.
It's such a fun little park! It's themed like a pirate ship, the ground around the structure is that squishy stuff, they have one baby swing and one regular and there's a giant slide down to a hiking trail along the river. There's a huge open area that I've seen people play soccer games, run dogs, throw frisbees... They have a covered table area, smallish, and one table uncovered. The toilet situation could be better. It's just one, maybe two portable toilets. They are kept mostly clean and free of vandalism.