Central Park Reservoir ca. 1947

One of the Park's most picturesque landscapes, the reservoir is 40 feet deep and holds a billion gallons of water. It was built in the 1860s as a temporary water supply for New York City, while the Croton Water system was shut down for repairs two weeks each year. The reservoir was decommissioned in 1993, deemed obsolete because of the Third Water Tunnel.

President Bill Clinton, Madonna, and Jackie Kennedy Onassis (for whom the reservoir was named in 1994) have all run on the 1.58-mile track.