Prehistoric art in Scotland Firth. The Romans eventually withdrew to a line in what is now northern England, building the fortification known as Hadrian's Wall from coast to coast. Around 141 CE they undertook a reoccupation of southern Scotland, moving up to construct a new "limes" between the Firth of Forth and the Firth of Clyde, where they built the fortification known as the Antonine Wall. The wall was overrun and abandoned soon after 160 and the Romans withdrew back to the line of Hadrian's Wall, until Roman authority collapsed in the early fifth century. The Antonine Wall and its associated forts left a
Architecture of Scotland in the Roman era Architecture of Scotland in the Roman era The architecture of Scotland in the Roman era includes all building within the modern borders of Scotland, from the arrival of the Romans in northern Britain in the first century BCE, until their departure in the fifth century. Although Ptolemy indicated that there were 19 "towns" in Caledonia, north of the Roman province of Britannia, no clear evidence of urban settlements has been found and these were probably hillforts. There is evidence of over 1,000 such forts, most below the Clyde-Forth line, but the majority seem to have been abandoned in the Roman