The three castros of Triacastela Curiosity · Triacastela, Sarria, Lugo Image of Triacastela, not of the place itself. The place name comes from the Latin tria castella, three castles, and local tradition connects it with three fortified settlements: the castro of Triacastela itself and those of Tras do Castro and Lagares, now barely visible among the meadows. Photo: iamato (CC BY 2.0) What to see and do in Triacastela