The Enchanted April by Elizabeth Von Arnim

There was no way of getting into or out of the top garden at San Salvatore except through the two glass doors, unfortunately side by side, of the dining-room and the hall. A person in the garden who wished to escape unseen could not, for the person to be escaped from would be met on the way. It was a small, oblong garden, and concealment was impossible. What trees there were -- the Judas tree, the tamarisk, the umbrella-pine -- grew close to the low parapets. Rose bushes gave no real cover; one step to right or left of them, and the person wishing to be private was discovered. Only the northwest corner was a little place jutting out from the great wall, a kind of excrescence or loop, no doubt used in the old distrustful days for observation, where it was possible to sit really unseen, because between it and the house was a thick clump of daphne.

Scrap, after glancing round to see that no one was looking, got up and carried her chair into this place, stealing away as carefully on tiptoe as those steal whose purpose is sin. There was another excrescence on the walls just like it at the northeast corner, but this, though the view from it was almost more beautiful, for from it you could see the bay and the lovely mountains behind Mezzago, was exposed. No bushes grew near it, nor had it any shade. The northwest loop then was where she would sit, and she settled into it, and nestling her head in her cushion and putting her feet comfortably on the parapet, from whence they appeared to the villagers on the piazza below as two white doves, thought that now indeed she would be safe.