The Chicago Botanic Garden in Glencoe, Illinois, is a 385-acre institution on nine islands within the Cook County Forest Preserves, owned by the Forest Preserve District of Cook County and managed by the Chicago Horticultural Society. Opened in 1972, it blends public parkland, museum-quality gardens, and scientific research, with 27 display gardens and five natural habitats. Its plan and later additions by notable designers shaped a major civic landscape. Education, conservation, and sustainability are central to its work through classes, plant science, rare species monitoring, and sustainable urban horticulture. National recognition has reflected both its horticultural excellence and its wider public role.