Mendietako Dorrea, or Mendieta Tower, is a 15th-century watchtower located in the medieval municipality of Artziniega in Álava's Ayala Valley. This fortified tower features distinctive embrasures and cannon holes that reflect its defensive purpose. The tower stands as part of Artziniega's rich medieval heritage and remains accessible to visitors as part of a scenic hiking route that connects the town's three historic towers through the natural landscape. Its elevated position offers panoramic views across the Ayala Valley, maintaining its original strategic viewpoint over the surrounding terrain.