Traditional waterfront houses in the Ribeira district and boat on the Douro River, Porto, Portugal, Europe

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