The Bishop's Palace with the Ribeira Quay and Ponte de Dom Luis I bridge over River Douro, Porto (Oporto), Portugal, Europe

travel destination photography horizontal colour image bridge ponte de dom luis i river douro porto oporto portugal europe ribeira quay bishop's palace outdoors day building exterior water clear sky blue dom luis i bridge arch bridge local landmark metal portuguese culture episcopal palace palace moored transportation incidental people river quay places of interest colour image colour color image color outside tourist destination travel landmark place of interest background people people in the background transport typically portuguese portuguese culture traditional culture tradition traditional traditionally portuguese