Pack a few snacks and enjoy a relaxing family day out at Antigo Lake Park. There's plenty of space for the kids to run around and get some exercise.
You're spoiled for sightseeing choice when visiting Antigo. Antigo Lake Park is a great place to start here, but there are loads of other fine places to visit. Clara R. McKenna Aquatic Center, Antigo City Park, and Langlade County Historical Society Museum are close to the outdoor recreational space and will fill in your day nicely.