Arnold Arboretum
Upon the Arboretum's 281 acres grow 15,000 trees, shrubs and vines, each of which is scientifically documented and available for teaching or research.
The Arboretum's story begins with two interesting partnerships. First Harvard University curates the collections and maintains the landscape, while the city, which owns the land and has leased it to the school for 1,000 years, maintains the infrastructure. The other partnership is that of Frederick Law Olmsted and Charles Sprague Sargent.