Established in 1934, the 1,200 acre Arboretum was a pioneer in restoration and management of ecological communities. In addition to native plant and wildlife areas, there is a large collection of labeled trees from around the world. It is the largest woody plant collection in Wisconsin. Other areas include several types of prairies, woods and savannahs, wetlands, the Longenecker Gardens, Viburnum Garden and the Wisconsin Native Plant Garden.