The Croton Fountain
This was the location of the Croton Fountain. It was fed by the Croton Aqueduct, which provided New York City with its first dependable supply of pure water. Considered one of the great engineering achievements of the mid-19th Century, the aqueduct transported water from a reservoir located more than 40 miles north of lower Manhattan. The fountain was dedicated at a ceremony celebrating the completion of the aqueduct. The Croton Fountain's circular stone basin was 100 feet in diameter, and the fountain could project a spire of water more than 50 feet into the air.
Submitted by @lampbane