Church of Santiago
Among the gardens of Puerta de la Villa and the former convent of San Francisco is where you'll find the ruins of the Church of Santiago. The truth is that I was sorry to see them in such a neglected state, with some graffiti on the walls, and the broken glass, bottles, plastic bags, etc. The church is made out of brick and stone and is believed to have been built in medieval times, although it was reformed in the 16th century. Only a few of its walls remain, and one of the entrances and a piece of the arches that supported the nave are still there, also.