The Castelo de Tomar is a historic castle located in the town of Tomar, Portugal. Built in the 12th century, it served as a stronghold for the Knights Templar, a medieval Christian military order. The castle features impressive walls, towers, and a well-preserved keep, showcasing a blend of architectural styles from different periods. Surrounding the castle is the Convent of Christ, a UNESCO World Heritage site that was once the headquarters of the Knights Templar in Portugal. The castle and convent together reflect the rich history and cultural significance of the region, attracting visitors interested in medieval history and architecture.