Designed by Frederick Law Olmsted and Calvert Vaux in the mid-nineteenth century, Prospect Park is one of Brooklyn’s most treasured destinations and a national landmark. The Prospect Park Alliance is a nonprofit organization founded in 1987 to restore and maintain Prospect Park after a long period of steady deterioration and decline. We preserve the natural environment, restore historic design and provide public programs and amenities for the Park, which receives more than 10 million visits each year. The Alliance plays a significant role in funding the operating budget that keeps the Park clean, safe and beautiful, and employs three-quarters of the staff that take care of the Park and engage its diverse surrounding communities. Today, Prospect Park is an international model for urban parks, and one of the premier green spaces in the United States.