The Master by Colm Toibin

Finally he walked slowly into a vast Italian space, with towers and castellated roofs, and a sky the colour of dark blue ink, smooth and consistent.

Baddesley Clinton, Warwickshire

Benito Cereno by Herman Melville

These tops hung overhead like three ruinous aviaries, in one of which was seen perched, on a ratlin, a white noddy, a strange fowl, so called from its lethargicsomnambulistic character, being frequently caught by hand at sea. Battered and mouldy, the castellated forecastle seemed some ancient turret, long ago taken by assault, and then left to decay.

Orford Castle, Suffolk

Dead Men Tell No Tales by E.W. Hornung

The facade, indeed, was wholly grim, with a castellated tower at one end, and a number of narrow, sunken windows looking askance on the wreck and ruin of a once prim, old-fashioned, high-walled garden.

Alnwick Castle, Northumberland