Of all the abundance of treasure which Northumberland possesses, from a historical point of view--of all its wealth of interesting relics of bygone days--ancient abbey, grim fortress, menhir and monolith, camp and tumulus--none grips the imagination as does the sight of that unswerving line which pursues its way over hill and hollow, from the eastern to the western shores of the north-land, visible emblem, after more than a thousand years, of the far-flung arm of Imperial Rome.
From Wallsend on the Tyne to Bowness on the Solway Firth it strode triumphantly across the land; even now in its decay it remains a splendid monument to that mighty nation's genius for having and holding the uttermost parts of the earth that came within their ken. As was inevitable, after the lapse of nearly eighteen centuries the great work is everywhere in a ruinous condition, and in many places, especially at its eastern end, has disappeared altogether; but not only can its course be traced by various evidences, but it was actually standing within comparatively recent years. As lately as the year 1800--lately, that is, compared with the date of its building--its existence at Byker was referred to in a magazine of the period. Now nothing is to be seen of it excepting a few stones here and there, for many miles from Wallsend; but the highroad westward from Newcastle, by Westgate Road, as is well known, follows the course of the Wall for nearly twenty miles. But farther west we may walk along the uneven, broken surface of the mighty rampart, or climb down into the broad and deep fosse which lies closely against it along its northern side, without troubling ourselves with the arguments and uncertainties of antiquaries, who have by no means decided on what was the original function of the Wall, who was its real builder, why and when the earthen walls and fosse which accompany it on the south were wrought, and many other smaller controversial points, which afford endless matter for speculation and discussion.
Early references to the Wall show that our forefathers knew it as the Picts' Wall; it is now generally referred to as the Wall of Hadrian, the general concensus of opinion yielding to that indefatigable ruler the credit of having wrought the mighty work. Whether built originally as a frontier line of defence or not, opinions are not agreed; but it is very certain that the Wall afforded the only secure foothold in the North to the Romans for well-nigh two centuries of hostility from the restless Brigantes to the southward, and the Picts and Scots to the north; and for another century or so after their southern neighbours had become friendly and peaceful, it still remained a substantial bulwark against the northern barbarians.