View over the river Douro to the old town of Porto and Vila Nova de Gaia at dusk, Portugal, Europe

atmosphere atmospheric light atmospheric attractions attraction cities city center city centre city portrait cityscape city scape city view city cultural monuments cultural monument cultural sites cultural site dawn deserted dim district of porto distrito do porto douro river douro downtown duero dusky dusk empty europe's europe evening atmospheres evening atmosphere evening hour evening mood evening scene evening shot evening skies evening sky evenings evening facing famous place heritages heritage historical old town historical historic center historic centre historic city center historic city centre historic old town historic inner city inner town landmark light atmosphere light mood light scene midtown mood municipal nobody no one no people northern portugal old city old district old town area old towns old town overlook overlook overview place of interest porto district porto portugal portuguese rio douro river rio douro rivers river sight southern europe south europe tourist attractions tourist attraction tourist landmark town center town centre townscape town view town travel photography twilight unesco site unesco world heritage sites unesco world heritage site unesco world heritage unesco world hertiage site unesco world site unesco uninhabited urban environment urban view into view of view of view of the city view of the town view on the city view over the city view over the town view over view vila nova de gaia world heritage site world heritage