Scotland during the Roman Empire even half of present-day Scotland and that Roman legions ceased to affect the area after around 211. The history of the period is complex and not well-documented. The province of Valentia, for instance, may have been the lands between the two Roman walls, or the territory around and south of Hadrian's Wall, or Roman Wales. Romans held most of their Caledonian territory only a little over 40 years; they probably only held Scottish land for about 80 years, if at all. Some Scottish historians such as Alistair Moffat maintain Roman influence was inconsequential. "Scots" and "Scotland" proper would not emerge
Architecture of Scotland Trimontium, and a continuous fortification between the Firth of Forth and the Firth of Clyde known as the Antonine Wall, built in the second century AD. Beyond Roman influence, there is evidence of wheelhouses and underground souterrains. After the departure of the Romans there were a series of nucleated hill forts, often utilising major geographical features, as at Dunadd and Dunbarton. Castles arrived in Scotland with the introduction of feudalism in the twelfth century. Initially these were wooden motte-and-bailey constructions, but many were replaced by stone castles with a high curtain wall. In the late Middle Ages new castles were