Though today the stretch of Fifth Avenue from 40th to 42nd Street looks onto Bryant Park and the New York Public Library, in the late 18th century, passersby would be met with a vastly different sight: 50 feet high and 25 feet thick granite walls that could hold up to 20,000,000 gallons of water. This was the Croton Distributing Reservoir and served a crucial role in the development of New York City. The concept of a municipal supply of water began after the growing city had been hit by waves of epidemics due to a lack of clean water (which was only accessible by wells or cisterns). The public outcry that followed prompted the military to create the Aqueduct, which started at dams at the Croton River in Westchester and ended at the Reservoir. The Croton Distributing Reservoir allowed New Yorkers the ability to have running water in their homes and served as the predecessor to the tap water available to us today. Outstripped by the growing city, the Croton Distributing Reservoir became obsolete and eventually was torn down. However, photographs of the imposing walls with their Egyptian facade provide a reminder of this essential relic of city infrastructure that occupied four acres of Midtown.