Pack a few snacks and enjoy a relaxing family day out at Yanguan Scenic Attraction. There's plenty of space for the kids to run around and get some fresh air.
You'll be spoiled for sightseeing choice when staying in Jiaxing. Yanguan Scenic Attraction is a good place to begin here, but there are numerous other fine spots to check out. Guanchao Shengdi Park, and Jiangnan Folklore Museum are not far from the outdoor recreational space and and will cap off your day nicely.