Galicia's largest municipality Curiosity · A Fonsagrada, Fonsagrada, Lugo With 434.8 square kilometres and its capital at 952 metres, A Fonsagrada is the largest municipality in Galicia by area, spread over twenty-eight parishes scattered across the eastern mountains of Lugo. Photo: Xurde Morán (CC BY-SA 4.0) What to see and do in A Fonsagrada