View over Douro River at sunset to Ribeira District, UNESCO World Heritage Site, Porto (Oporto), Portugal, Europe

travel destination photography panoramic colour image europe portugal portuguese culture outdoors sunset city building exterior bright light illuminated porto oporto unesco world heritage site unesco ribeira district douro river river water incidental people lens flare boat moored elevated view reflection colour color image color outside tourist destination travel background people people in the background reflecting reflected unesco world heritage sites world heritage site world heritage sites cities typically portuguese traditional culture tradition traditional traditionally portuguese european panorama wide angle sundown dusk twilight x 2018m2 x printready