The Clan system changed and the patriarchal role of the laird changed - they became more like rulers and less like fathers, their relationship with the clan members became more distant and they used the land for amassing their own wealth rather than for the good of the members of the clan. The market for mutton and wool increased and the Lairds wanted to fence the land and farm the sheep - the people in the homesteads were in the way - hence the clearances. During the time of the clearances the area was controlled by the Earl of Breadalbane who owned land from here to Oban. He like many other Lairds ousted many of his tenants and demolished their properties, you can still see evidence of the broken crofts around Loch Tay.
Old Lawers Village is a fascinating abandoned village whose famous inhabitant was and the Lady of Lawers, she was renowned for her prophesies many of which seem to have come true.
Look out in Aberfeldy for the famous Wade's Bridge, dating from 1733 it was designed by William Adam and provided the English Troops with the vital crossing of the River Tay. Another of Wade's bridges is at Kenmore. The beautifully sculpted statue of a soldier of the Black Watch stands as a memorial for the regiment adjacent to the bridge.
This is just a whetting of the appetite and if you are interested in the history of the area then there are many websites which can prove to be very informative. Try A Perthshire Diary. Of course if Ancient History doesn't interest you, why not visit Doune Castle . The castle was made infamous by Monty Python and the Holy Grail!