Qalaat El Muizz or The Castle of St. Louis. The Castle of St. Louis was erected on the emplacement of a Fatimit fortress during the Crusade led by French King Louis IX, popularly known as St. Louis.

Built in the mid-13th century, the present state of the Castle makes it easy to observe various stages of the restoration carried out in the Mamluke era, particularly work done in the 17th century by Emir Fakhreddine II. At the foot of the hill are a dozen or so Roman columns scattered on the ground.