New York is the largest city in the United States, with the city proper's population more than double the next largest city, Los Angeles (or roughly equivalent to the combined populations of Los Angeles, Chicago, and Houston, the United States' second, third, and fourth most populous cities respectively).
Comprised of 2.6 million acres in the Adirondack Forest Preserve and 286,000 acres within the Catskill Forest Preserve, these lands represent a majority of all state owned property within the Adirondack and Catskill Parks.
The Forest Preserve District of Cook County is a governmental commission in Cook County, Illinois, that owns and manages the Cook County Forest Preserves. The preserves are a network of open spaces, containing forest, prairie, wetland, streams, and lakes, that are mostly set aside as natural areas. Cook County contains Chicago, and is the center of a densely populated urban metropolitan area in northeastern Illinois. The Forest Preserves encompass approximately 68,000 acres (275 kmÂ²) of open space within the urban surroundings of Chicago.