Pictures of Dun Carloway Broch on the Isle of Lewis in the Outer Hebrides, Scotland. Brochs are among Scotland's most impressive prehistoric buildings and were the precursors of the Medieval Scottish Tower Houses. The world Broch is derived from lowland scots who called forts Brough from the old Norse Borg. <br /> <br /> Broch stone roundhouses date from about 2,300 to 1,900 years ago, and are found mainly in north and west Scotland. Dun Carloway Broch was probably built around the time of the Roman occupation in Britain in 43AD and was probably the primary dwelling-places for the principal family in the area. Dun Carloway Broch would have provided some protection against sporadic raiding, but were not purely defensive structure but a focal point for the clan of the area.
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