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Porta Nigra (170 CE) four story city gate & fortification from ancient Roman times. Trier, Germany. | Porta Nigra massive towers. Trier, Germany. | End walls & towers of Porta Nigra. Trier, Germany. | Sandstone blocks of Porta Nigra fitted together without mortar. Trier, Germany. |
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Top of Porta Nigra tower. Trier, Germany. | Upper arcade of inner court wall, allowing invaders to be fired upon from above at Porta Nigra. Trier, Germany. | Upper arcades & towers on inner side of Porta Nigra. Trier, Germany. | Porta Nigra as seen from inside ancient Trier. Trier, Germany. |
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Romanesque arch openings in upper arcade used for defense on Porta Nigra interior. Trier, Germany. | Red rose in bloom in gardens next to Porta Nigra. Trier, Germany. | Model of Roman era Trier viewed with Porta Nigra at bottom in Trier Archaeological Museum. Trier, Germany. |
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