On the same day we visited Planting Fields Arboretum, we decided to drive down the road to the Bailey Arboretum, located in Lattingtown.
This site is very different from the other. It was not owned by a wealthy family, but by an amateur naturalist. It consists of forty acres of unusual plants and trees with relatively flat ""well-marked wooded trails"" (website), winding through the property. It is probably a wonderful place to snowshoe in winter.
There is a paved parking lot and paved walkways to a Children's Habitat that has picnic tables, climbing features, and musical instruments. It is a "place where children can explore, climb, build, create, and make music,"(website). Along other accessible walkways are cages that house various animals and birds that have been rescued by the Volunteers for Wildlife.
Multi-stall, handicapped accessible restrooms are located in a farm-like building a bit away from the parking lot.
This seems like a good place for families: little games are provided for children involving the identification of plants and animals, the Children's Habitat allows exploration, there are animals for viewing and a nice area for a picnic.
As always, we at Destination:Accessisble, advise you to check a venue's website, www.bailey arboretum.org, when planning a visit, to "know before you go."