Architecture of Scotland in the Roman era England. Around 141 CE they moved up to construct a new "limes", a sward-covered wall made of turf known as the Antonine Wall, the largest Roman structure in modern Scotland. They soon retreated to Hadrian's Wall, with occasional expeditions that involved the building and reoccupation of forts, until the collapse of Roman power in the early fifth century. Caledonia was the name that the Romans gave to the land north of their province of Britannia. In his "Geographia", Ptolemy, possibly drawing on earlier sources of information as well as more contemporary accounts from the Agricolan invasion, identified 19 "towns" in
Vestiges of the Gallo-Roman wall, Grenoble protection of the 9-hectare urban surface of the Roman settlement. It served as a symbol of the status of Civitas. The wall was built up of small limestone blocks and was covered with plaster. Some parts of the wall were 4 meters thick and made up of limestone, pebble and tuileau rubble. These materials were held together by mortar. This defensive construction was between four and five meters thick. The two doors of the surrounding wall were built on stone blocks reused from previous buildings such as funerary monuments. Close to the foundation of the Viennoise door, inscriptions can be