39.Porta Nigra, Trier, Germany
Eye-catching 2nd-century Roman city gate, Porta Nigra in Trier Germany, got its name from the weathered or darkened colour of the stones of which it was made.
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39.Porta Nigra, Trier, Germany
Eye-catching 2nd-century Roman city gate, Porta Nigra in Trier Germany, got its name from the weathered or darkened colour of the stones of which it was made.