- atlasobscura.com places/porta-nigraBuilt in grey sandstone just before the year 200, Trier’s Porta Nigra represents the last bastion of the Roman Empire’s presence north of the Alps.
- spottinghistory.com view/3785/porta-nigra/In Roman times, the Porta Nigra was part of a system of four city gates, one of which stood at each side of the roughly rectangular Roman city.
- http://sacred-destinations.com germany/trier-porta-nigraThe oldest defensive structure in Germany, the Porta Nigra was erected in about 180 AD when the Roman city was surrounded by walls.
- shootandscrawl.com porta-nigra/Iron and lead braces were broken out of the Porta Nigra for reuse. ... After his death in 1035, the Porta Nigra was transformed into a church.
- instagram.com porta_nigra_band/6 Followers, 0 Following, 0 Posts - See Instagram photos and videos from Porta Nigra (@porta_nigra_band).
- bega.com en/references/porta-nigra-trier/The Romans built the Porta Nigra from more than 7000 stone blocks in 170 AD. ... Today, the Porta Nigra is home to the Roman city’s central information centre.
- historyhit.com locations/porta-nigra/Porta Nigra, translated as the “Black Gate” is a magnificently well-preserved second century Roman gate in Trier, Germany.
- itinari.com location/porta-nigraDiscover the Magnificent Porta Nigra in Trier: A Roman Marvel. Trier, a charming city in Germany, is home to a remarkable historical treasure - the Porta Nigra.
- agoda.com hotel-porta-nigra/hotel/trier-de.htmlPast families with young children that have stayed at this property have given Hotel Porta Nigra an average rating of 8.1.