Madison Square Park Conservancy | 1,142 followers on LinkedIn. A public space at the heart of our city. Discover what a city park can be. | Madison Square Park is a seven-acre green space at the heart of New York City. Our mission is to protect, nurture, and enhance Madison Square Park, creating an environment that fosters moments of inspiration. The Conservancy, a non-profit that is fully funded by the community, is responsible for caring for the park.