Your companion to exploring Brooklyn’s famous 478-acre Green-Wood Cemetery, a National Historic Landmark and Level III accredited arboretum, established in 1838. The app allows you to focus on any one of its three main themes: Art, History or Nature. Or tap on “Map” and explore as you go. Videos and audio segments present Green-Wood staff and other experts talking about the cemetery, its history, environment and horticulture, monuments and restoration.