Indians of the Lenni Lenape tribe occupied the land now called CLOSTER. They were displaced by the Europeans, predominantly the Dutch. For 200 years Dutch was the common language. Most of the colonial architecture in the Hudson River Valley was Dutch in origin and over 20 of these original homes still remain and are used by Closter residents. No other town in Bergen County boasts so great a concentration of houses built in or prior to 1740. In 1904 the borough of Closter was incorporated and present town boundaries were established encompassing 3.31 square miles with 150 acres of reservoirs and streams.