Ruinas del Convento de San Marcos Monument · Marchagaz, Trasierra-Tierras de Granadilla, Cáceres Image of Marchagaz, not of the place itself. Remains of a former convent on the southern slope of the Sierra de Santa Bárbara (locally called Altamira), once inhabited by friars; a pilgrimage is held next to its ruins every year after Holy Week. Photo: Estevoaei (CC BY-SA 4.0) What to see and do in Marchagaz