terraced vineyards of pinhão - the heart of porto's wine country

agriculture biodiversity biosphere bridge city countryside curve douro river valley ecology ecosystem environment eucalyptus europe exterior farming fluvial foliage green greenery hill landscape lines meadow mountain mountainous landforms nature outdoors outside plantation portugal rural scene scenic view summer terrace tourism town tradition travel destinations scenics tree vinegrowing vineyard viniculture water watercourse wine growing making terraced vineyards heart country pinhão