The Castelo de Castelo Branco is a historic castle located in the city of Castelo Branco, Portugal. Built in the 12th century, it served as a defensive structure during the Reconquista, a period when Christian kingdoms sought to reclaim territory from Muslim rule. The castle features impressive stone walls and towers, offering panoramic views of the surrounding landscape. Today, the castle is a popular tourist attraction, showcasing the rich history of the region. Visitors can explore its ruins and learn about the medieval architecture and the significance of the castle in the context of Portuguese history.