The Tower was Sackville-West's sanctum; her study was out of bounds to all but her dogs and a small number of guests by invitation. Her writing room is maintained largely as it was at the time of her death. Nigel Nicolson records his discovery in the Tower of his mother's manuscript describing her affair with Violet Trefusis. This went on to form the basis of his book "Portrait of a Marriage". The clock, below the Tower parapet, was installed in 1949. A plaque is affixed to the arch of the Tower; the words were chosen by Harold Nicolson: "Here lived V. Sackville-West who made this garden". Nigel Nicolson always felt that the memorial failed to acknowledge his father's contribution. The Tower has a Grade I listing.