Boats on the Douro River and traditional houses of Ribeira District seen from Vila Nova de Gaia district, Porto, Portugal, Europe

travel destination photography horizontal colour image porto portugal ribeira duro river waterfront houses river banks building exterior architecture day cityscape urban scene facade sky city large group of people men women side view full length walking tourist tourism boat transportation outdoors europe colour color image color outside tourist destination travel group transport cities tourists holiday maker holiday makers on holiday on vacation