Lochslin Castle (3)
So here we are, this is Lochslin Castle, drawn by J D MacKenzie, as it looked in 1870 - both an elevation, viewed from the south-west, and a plan.  

The castle was based on the L-plan, with the wing offset so as to create a second re-entrant.  Curiously (assuming the drawing is correct) the door wasn't in either of these re-entrants, it was in the east wall, near the north-east angle (the only corner of the building of which any survives.  The 1792 Statistical Account states that there was a staircase where the two parts of the building meet (which is where you would expect the doorway to be).

The north-west and south-west angles of the castle were defended by turrets, as shown on both the elevation and the plan, but again unusually, there were no turrets on the east side.  Usually if only two turrets are built, they are on diagonally opposite corners.  The shortage of turrets is perhaps compensated for by the profusion of gun-loops.

The other feature of mild interest here is the indication of a wall around the building.  Photo #2 shows an unnaturally straight line in the vegetation to the left of the castle remains, which looks like an overgrown wall.