Castle Puebla de Alcocer stands majestically atop an elongated rocky outcrop in La Siberia, commanding expansive views across four reservoirs and multiple river valleys. Built during the 12th and 13th centuries and remodeled in the 15th century by the Order of Alcántara, the castle showcases a impressive keep with multiple floors and intricate defensive architecture. From the Tower of Homage, visitors enjoy sweeping vistas encompassing the La Serena reservoir, surrounding plains, and a distinctive colony of spotted vultures inhabiting the Guadiana Valley. The castle's strategic positioning allowed it to monitor rival movements across vast distances, exemplifying medieval fortress design.