The Castle of Zafra is a medieval fortress located in the province of Guadalajara, Spain. Built in the 12th century on top of a rocky hill, the castle is an impressive example of military architecture and has been declared a National Monument.

The castle has a rectangular floor plan with several towers and a central courtyard. It features a unique and intricate system of underground galleries, which were used for defense and storage. The castle also has a cistern for collecting rainwater, an essential resource during the Middle Ages.

The Castle of Zafra has been used as a location for several films and TV series, including the popular show "Game of Thrones". Its rugged and isolated location, perched on a rocky outcrop, gives it a sense of mystery and magic. The castle is open to visitors and offers stunning views of the surrounding landscape.