Photograph of the Spur Tower taken from the north
Spur Tower Information
At the center of the South facade of the Main Fortress is a distinctive, massive tower, the 24 meters-high upper terrace of which constitutes the highest level of the entire fortified building. Curiously, it occupies the entire width of the southern boulevard and possesses a corridor at its base to allow circulation between the South and Southwest bastions. This construction, with a jutting spur that looks like the beak of a parrot, was mainly designed for the protection of the fortress keep, acting as a shield for it. Its elevated upper platform was also an excellent look-out post, with an sweeping overview toward the interior of the island.