The keep and the Tower of San Juan Monument · San Cebrián de Castro, Tierra del Pan, Zamora Image of San Cebrián de Castro, not of the place itself. Of the castle there are preserved and consolidated the main gate with drawbridge, the keep, the Torre de San Juan, a false postern and the well, as well as granaries, kitchens, cellars, stables and wall-walks. Photo: El alistano (CC BY-SA 4.0) What to see and do in San Cebrián de Castro