Keywords: Trier Porta Nigra BW 3.JPG 49 45 32 39 N 6 38 36 32 E heading 40 en Porta Nigra Black Gate in Trier Germany best preserved Roman building north of the Alps and World Heritage Site of UNESCO south side de Porta Nigra in Trier besterhaltenes römisches Bauwerk nördlich der Alpen UNESCO Weltkulturerbe Südseite own Berthold Werner 2008-07-23 QualityImage Porta Nigra Taken with Pentax K10D Photographs by User Berthold Werner/Deutschland/Trier Quality images by User Berthold Werner Quality images of Rhineland-Palatinate by User Berthold Werner Quality images of Trier 2008 in Trier |