agriculture arable arboreal arnhem backdrop background bank blue clouds country countryside dutch farm farmland field grass green holland horizon land landscape line Netherlands pastoral rank rhine river season shadow shadows sky spring tree trees poplar wallpaper windbreak church roermond trees flower flowers tulip tulips yellow Almere focus pilar stone harbour maassluis Rotterdam waterweg pink purple queen den haag hague mill mills molen stompwijk wind windmill fish fishing friesland Harlingen rural sail sea ship water architecture city classic europe home house old