The Sierra de Irta Castle is a historic fortress located in the Sierra de Irta mountain range in Spain. Built in the 16th century, it was designed to protect the coastal area from pirate attacks. The castle features a simple architectural style, with thick stone walls and a strategic position overlooking the sea. Surrounded by natural beauty, the castle is part of the Sierra de Irta Natural Park, which offers hiking trails and stunning views. Visitors can explore the ruins and enjoy the peaceful landscape, making it a popular destination for history enthusiasts and nature lovers alike.