Announcements Jehovah’s Witnesses Watchtower Sign Is Replaced on Brooklyn Waterfront Jehovah’s Witnesses Watchtower sign in Brooklyn. Courtesy of MasterButler via Flickr.BROOKLYN HEIGHTS– The Jehovah’s Witnesses “WATCHTOWER” sign illuminating the East River waterfront is being replaced with a new one, after almost 50 years.Panorama , a new office and retail campus in Brooklyn Heights developed by Columbia Heights