The Douro River banks with waterfront houses and boats seen from Dom Luis I Bridge, Porto, Portugal, Europe

travel destination photography horizontal colour image porto portugal ribeira panoramic duro river banks waterfront houses boats duro river river banks building exterior architecture night day cityscape urban scene high angle view boat transportation tourism tourist large group of people men women full length side view tree roof sea water facade sky outdoors europe colour color image color outside tourist destination travel high angle elevated view from above looking down group night time night time transport tourists holiday maker holiday makers on holiday on vacation panorama wide angle