Iglesia de Santa Marta (Trasierra) Monument · Trasierra, Campiña Sur, Badajoz Image of Trasierra, not of the place itself. The church of Santa Marta, patron saint of the village, has a single nave with a barrel vault, a polygonal chancel, and an octagonal brick tower, with Mudejar elements. Photo: Hovallef (CC BY-SA 4.0) What to see and do in Trasierra