The New York Botanical Garden (NYBG) is a botanical garden and National Historic Landmark located in the Bronx, New York City. The 250-acre site's verdant landscape supports over one million living plants in extensive collections. The Garden is also a major educational institution, teaching visitors about plant science, ecology, and healthful eating through NYBG's hands-on, curriculum-based programming. The Garden is home to the LuEsther T. Mertz Library, which contains one of the world's largest collections of botany-related texts, illustrations, and photographs. The Garden also has a long-standing commitment to conservation and research, with programs in place to protect endangered plant species and study the effects of climate change on plant life.