In the heart of the island is a fortress, built in the 13th century by the Templars, now open as a museum. I show many shots taken from its nice courtyard, from the roof, some mosaics exposed here.
On the Templars, from the Enc. Britt.: "also called Knight Templar member of the Poor Knights of Christ and of the Temple of Solomon, a religious military order of knighthood established at the time of the Crusades that became a model and inspiration for other military orders. Originally founded to protect Christian pilgrims to the Holy Land, the order assumed greater military duties during the 12th century. Its prominence and growing wealth, however, provoked opposition from rival orders. Falsely accused of blasphemy and blamed for Crusader failures in the Holy Land, the order was destroyed by King Philip IV of France."