Missouri Botanical Garden is a non-profit organization dedicated to environmental conservation. It was founded in 1859 and is one of the oldest botanical gardens in the United States. The garden spans 79 acres and features a variety of gardens and exhibits, including the Climatron, a geodesic dome that houses a rainforest environment. The garden also conducts research and conservation efforts around the world, with a focus on plant biodiversity and sustainability. In addition, the garden offers educational programs and events for visitors of all ages.