View of the Dom Luis I bridge over Douro River aligned with colourful buildings at sunset, looking towards the Ribeira district, UNESCO World Heritage Site, Porto, Norte, Portugal, Europe

photography horizontal color image travel destinations travel outdoors sunset dusk incidental people portugal europe douro river river water dom luis i bridge bridge architecture city urban scene building porto cloud sky boat rooftop tree nature dramatic sky trees travel destination tourist destination tourist destinations sundown evening twilight skies rivers flowing water outdoor outside cities urban buildings bridges connection connections nautical vessel nautical vessels transport transportation architectural