1930 plan to fill New York Harbor with landfill! The proposal by T. Kennard Thomson was originally published in 1911 in Popular Science and would have filled the entire East River with landfill in addition to creating new peninsulas off of Staten Island, Bayonne and Sandy Hook, totaling fifty square miles! With the East River gone, Thomson proposed connecting the Long Island Sound back to the harbor by digging a new channel from Flushing through Brooklyn. 

Thomson revised the plan in 1930 (seen above), naming the new landfill City of New Manhattan, half of which would be in the state of New Jersey, separated by the extension of Broadway which would be a grand boulevard over railroad tracks flowing into a tunnel to Staten Island. This grand boulevard would be four miles long and three levels high, with trains, automobiles, and airplane landings! Tunnels would also go from Sunset Park to Bayonne, Red Hook to Jersey City, and Cobble Hill to Jersey City.