We paid a quick visit to the Triangular Lodge in Rushton a small village near us. A strange structure and yes it really is triangular in shape. it is part of the English Heritage.
More info here:
English Notable Houses - Rushton Triangular Lodge
None of the following have been edited cropped just straight forward shots.
Notice different shape windows?
I was a bit miffed at this shot as I could not step back far enough to get the front view in. Only good shot is from the side.