![](http://www.alamy.com/thumbs/6/381FAC98-01F5-4FF7-93A3-81486893305C/KD85AX.jpg)
Porta Nigra, Roman city gate, 2nd. century AD, Trier, Rheinland-Pfalz, Germany
Size: 4500px × 2996px
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Photo credit: © Mark Dunn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ancient, antique, architecture, building, city, empire, gate, germany, heritage, historic, historical, history, landmark, landscape, monument, nigra, palatinate, porta, rhineland, roman, site, sky, stone, temple, tourism, traditional, travel, treves, trier, unesco, wall, world