View over the Wine Region of the Douro River, UNESCO World Heritage Site, Portugal, Europe

travel destinations travel horizontal color image outdoors day portugal europe no people cloud sky aerial view vineyard agriculture winemaking river water douro river unesco world heritage site landscape building architecture wine region hill vineyards wine industry vine vines grape grapes grape vine grape vines viticulture viniculture travel destination tourist destination tourist destinations rivers flowing water outdoor outside nobody no one no person landscapes hills physical geography daytime buildings architectural