Clunie Castle (8)
A curious feature of this building is the prominent stone that protrudes from (what is now) the top of the stair-tower.  It is directly above the door, but does not appear to have been part of a machicolation, intended to defend the door below.  Also odd is the fact that it is not show on the early drawings of the building.

(Canmore state that it was a machicolation.)
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