The Hadrian’s Wall Path is a footpath in the north of England. It runs for 84 miles from Wallsend on the east coast of England to Bowness-on-Solway on the west coast. The reason for the wall's construction is disputed. Many believe it was to keep the barbarians and the Romans separate. Others surmise that it was an act of defense before expansion.
Map of Welsh castles. The castles of Wales were not only built by the English as part of their conquest and control of the local population, many were built by the Welsh Princes themselves. Internal feuding between them led to weakness and made conquest that much easier. How many other places in the old British Empire fell for the exact same reason ? rjp