Scotland during the Roman Empire soon after 160. The destruction of some of the southern brochs may date to the Antonine advance, the hypothesis being that whether or not they had previously been symbols of Roman patronage they had now outlived their usefulness from a Roman point of view. The Roman frontier became Hadrian's Wall again, although Roman incursions into Scotland continued. Initially outpost forts were occupied in the south-west and Trimontium remained in use but they too were abandoned after the mid-180s. Roman troops, however, penetrated far into the north of modern Scotland several more times. Indeed, there is a greater density of Roman
Architecture of Scotland classical models. Edinburgh's New Town was the focus of this classical building boom in Scotland. From the mid-eighteenth century it was laid out according to a plan of rectangular blocks with open squares, drawn up by James Craig and built in strong Craigleith sandstone which could be precisely cut by masons. Most residences were built as tenement flats, where, in contrast to contemporary building in England where buildings were divided vertically into different houses, they were divided horizontally, with different occupants sharing a common staircase. The smallest might have only one room, the largest several bedrooms and drawing rooms. This