One of only three state parks within Manhattan (the others being Hudson River Park and Franklin D. Roosevelt Four Freedoms Park), it has become one of the most heavily used state parks in New York. The 28-acre (11 ha) site includes synthetic sport surfaces as well as several acres of "green roofs", with varying depths of soil supporting plantings and trees up to 35 feet (11 m) high. This is the largest green roof in New York City.