A new exhibit of engineers’ drawings and photographs curated by Robert Kornfeld. Open every Saturday and Sunday, 1-4 pm. The Keeper’s House has received a Greater Hudson Heritage Network Award for Excellence for its interactive permanent exhibit about the history of the Croton System and the NYC water supply. Located at 15 Walnut Street, Dobbs Ferry, between the Aqueduct Trail and Broadway. Docents are available to answer questions, provide information about walks & tours & more and sell NYC and Westchester Aqueduct maps, shirts and caps. (From Metro-North Dobbs Ferry Train Station, a 5-10-minute uphill walk).