Castillo de Jerez de los Caballeros is a major medieval fortress in Badajoz province featuring a fortified walled enclosure and Alcazaba complex with Templar origins dating to the 13th century. The defensive system encompasses approximately 1,700 meters of perimeter walls enclosing roughly 15 hectares, originally featuring 26 semicircular towers with 18 surviving today. Notable structures include the Tower of Homage with pointed-vault interior chambers and Gothic windows, along with six historic gates though only the Villa and Burgos gates remain standing. The castle's Tower of Homage has long been known as the legendary "Bloody Tower" due to historical accounts of Knights Templar executions at the site. This fortress represents one of Spain's best-preserved medieval castles and remains a significant cultural heritage monument integrated within the modern city.