 Trier: The Porta Nigra, viewed from outside The Porta Nigra (black gate), a UNESCO world heritage site in Trier, Germany, is a large Roman gatehouse with two four-storied towers, projecting as near semi-circles on the outer side. The structure is largely of grey sandstone, and was built between 180 and 200. In the Middle Ages, the building was used as a church, one of the towers being adapted to contain an apse. Download high resolution version (1000x681, 105 KB)Porta Nigra in the city of Trier (from German wikipedia, uploaded there by Stefan Kühn) de:Bild:Porta_Nigra_Landseite. ...
Download high resolution version (1000x681, 105 KB)Porta Nigra in the city of Trier (from German wikipedia, uploaded there by Stefan Kühn) de:Bild:Porta_Nigra_Landseite. ...
Site #86: Memphis and its Necropolis, including the Pyramids of Giza (Egypt). ...
Trier (French: Trèves, Spanish: Treveris, Italian: Treviri) is Germanys oldest city. ...
The Roman Empire is the term conventionally used to describe the Ancient Roman polity in the centuries following its reorganization under the leadership of Octavian (better known as Augustus). ...
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Sandstone near Stadtroda, Germany Sandstone is a sedimentary rock composed mainly of sand-size mineral or rock grains. ...
For other uses, see number 180. ...
For other uses, see number 200. ...
The Middle Ages formed the middle period in a traditional schematic division of European history into three ages: the classical civilization of Antiquity, the Middle Ages, and modern times, beginning with the Renaissance. ...
A church building (or simply church) is a building used in Christian worship. ...
This article is about an architectural feature; for the astronomical term see apsis. ...
The name Porta Nigra or black gate comes from the layer of black soot that covered the gate during the industrial revolution. This is best seen when the structure is wet from fresh rain. Although the top of one tower is missing, the gate is still remarkable. The inside is open allowing tourists to enter and climb the floors. Soot, also called lampblack, Pigment Black 7, carbon black or black carbon, is a dark powdery deposit of unburned fuel residues, usually composed mainly of amorphous carbon, that accumulates in chimneys, automobile mufflers and other surfaces exposed to smoke—especially from the combustion of carbon-rich organic fuels in the...
The Industrial Revolution was the major technological, socioeconomic and cultural change in the late 18th and early 19th century resulting from the replacement of an economy based on manual labour to one dominated by industry and machine manufacture. ...
The Porta Nigra has even made a cameo as a somewhat-accurate exploreable area (with some artistic license taken) in the 2003 PC and console game Deus Ex: Invisible War. Deux Ex: Invisible War is a computer game. ...
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