There are some 500 brochs scattered across Scotland, especially across the north and west of the country. Built in the last couple of centuries BC and the first couple of centuries AD they combine features of fort, fortified house, and status symbol, and could easily have served different purposes in different places and at different times. Of all Scotland’s brochs one quite literally stands supreme: Mousa Broch rises to 13m high and is both magnificent and awe inspiring.