The 250-acre Garden—the largest in any city in the United States—is a National Historic Landmark. NYBG encompasses 50 specialty gardens and collections comprising more than one million plants, the Nolen Greenhouses for Living Collections, and the Enid A. Haupt Conservatory, the nation’s preeminent Victorian-style glasshouse. Highlights include the award-winning Peggy Rockefeller Rose Garden, considered among the world’s most sustainable rose gardens; the Native Plant Garden, celebrating the diversity of northeastern North American plants; and 30,000 distinguished trees, many more than 200 years old. More than one million visitors annually enjoy the grounds, view innovative exhibitions, and participate in educational programs that are larger and more diverse than those of any other garden in the world.