Ardvreck Castle is a late 16th century stone L-plan tower house, founded by Neil Macleod, Laird of Assynt. Standing at the neck of a long rocky peninsula that juts westwards into Loch Assynt, the rectangular main block is of three storeys. Its vaulted basement is pierced by gunloops and the round stair tower is corbelled out to support a square two storey caphouse. Picture © Andy Knight