record of changing of seasons. Although it is still unclear who built it. Hadrian’s Wall is an ancient wall which was built in 2nd century by Hadrian, the emperor of Rome from AD 117 to 138, and it marked the northern border of the Roman Empire in Britain. The wall was 80 Roman miles (117 kilometres) long and it is situated in northern Great Britain and stretched from Solway Firth in the west to the Tyne River near Newcastle in the east. It was built to keep the Caledonians of Scotland out of England. Windsor Castle, which is one of the official residents of British monarch, is located in the English country of Berkshire. It is the largest in habited castle in the world and the oldest in continuous occupation, since it dates back to the time of William the Conqueror. The castle’s area is approximately 484,000 square feet (44, 955 square metres). The castle has been garrison fortress, home, official palace and sometimes prison for most of the Kings and
being built of local stone. Roman influence The written protohistory of Scotland began with the arrival of the Roman Empire in southern and central Great Britain, when the Romans occupied what is now England and Wales, administering it as a province called Britannia. Roman invasions and occupations of southern Scotland were a series of brief interludes. In 834 AD the general Gnaeus Julius Agricola defeated the Caledonians at the battle of Mons Graupius, and Roman forts were briefly set along the Gask Ridge close to the Highland line (none are known to have been constructed beyond that line). Three years after the battle the Roman armies had withdrawn to the Southern Uplands. They erected Hadrian's Wall to control tribes on both sides of the wall, and the Limes Britannicus became the northern border of the empire, although the army held the Antonine Wall in the Central Lowlands
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