Porta Nigra, a large Roman city gate, Trier, Rhineland-Palatinate, Germany, Europe

aged architectural architecture being beings building buildings city cultural day daylight daytime during europe european exterior exteriors famous federal freestone frg gate gates german germany heritage historic historical history human humans known landmark landmarks large monument monuments nigra of old outdoor palatinate people person persons photo photos porta renowned republic rhineland rhineland palatinate roman roman romans sandstone seeing shot shots sight sights sit site sites sits sitting stone stony summer summery the tourism touristic touristical touristically touristy town trier unesco urban view views well well known world worth