The Closter Nature Center (CNC) is a non-profit organization dedicated to environmental education, recreation and the conservation of 136-acres of forested wetlands, streams, ponds and trails. Great spot for hiking and fishing. Free to enter. Don't forget to pack snacks! It's pretty rustic there.
The Tenafly Nature Center is a non-profit member-supported nature preserve. Its mission is the stewardship of nearly 400 wooded acres for the purposes of conservation, education and recreation. Perfect spot for hiking. It offers family-friendly classes in the main cabin. There is an entrance fee of $10 per family.
Popular local go-to for families features wild animal exhibits, petting zoo, carousel and train. This zoo really stepped up its game lately. It feels more like a theme park now, complete with ambient music. Go in the morning. By the afternoon, it starts to fill up, even with the required reservations. Also, pack your own lunch. The cafe could get pricey.