 Complete the following phrase:  The tower, often named Leanders Tower in reference to the legend of Hero and Leander which took place in the Dardanelles strait, also known as the Hellespont in antiquity, was destroyed during the earthquake of 1509, and burned in 1721. Since then it was used as a lighthouse, and the surrounding walls were repaired in 1731 and 1734, until in 1763 it was erected using stone. From 1829 the tower was used as a quarantine station, and in 1832 was restored by Sultan Mahmud II. Restored again by the harbour authority in 1945, the most recent restoration began in 1998 for the James Bond movie The World Is Not Enough, and steel supports were added around the ancient tower as a precaution after the 17 August 1999 