 It chronicles a season spent living on the dunes of Cape Cod.Beston's "Fo'castle," the 20x16 beach cottage which served as the setting for the book "The Outermost House", was built in June 1925 and then claimed by the sea in February 1978.Beston (born Henry Beston Sheahan in 1888; died 1968) named the cottage "the Fo'castle" because its ten windows and its commanding presence on top of a dune overlooking the open Atlantic Ocean gave him the feeling of being aboard a ship.