Caerlaverock Castle in Dumfries and Galloway is the only triangular castle in Britain and has been used in numbers films, including The Decoy Bride featuring David Tennant and Kelly Macdonald.

A unique Scots castle has been closed to the public so it can be repaired. Caerlaverock Castle in Dumfries and Galloway is the only triangular castle in Britain and has been used in numbers films, ...