Ajloun Castle, also known as Qalʻat 'Ajloun, is a 12th-century Muslim fortress perched on a hill in northwestern Jordan. Originally built by the Ayyubids and later expanded by the Mamluks, this castle played a strategic role in controlling traffic between Damascus and Egypt. With its impressive architecture, including corner towers, curtain walls, and a moat, Ajloun Castle stood as a formidable defense against Crusader incursions. Today, it serves as a popular tourist destination, offering visitors a glimpse into Jordan's rich history and heritage.