Near Grand Army Plaza lies the Pond, a peaceful spot right at the park's edge. This serene body of water is complemented by a rustic wooden structure known as "Cop Cot." Perched on an outcrop near the Sixth Avenue entrance, Cop Cot provides a charming overlook of the Pond.
Source - https://en.wikipedia.org/wiki/The_Pond_and_Hallett_Nature_Sanctuary