Scotland during the Roman Empire half of Scotland's land mass under Roman control. Scotland has inherited two main features from the Roman period, although mostly indirectly: the use of the Latin script for its languages and the emergence of Christianity as the predominant religion. Through Christianity, the Latin language would become used by the natives of Scotland for the purposes of church and government for centuries more. Roman influence assisted the spread of Christianity throughout Europe, but there is little evidence of a direct link between the Roman Empire and Christian missions north of Hadrian's Wall. Traditionally, Ninian is credited as the first bishop active
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