亚历山大灯塔,卫星地图 (世界奇迹指南)
http://en.wikipedia.org/wiki/Pharos_of_Alexandria
The Lighthouse of Alexandria (often called the "Pharos of Alexandria" after the island on which it resided), was considered one of the Seven Wonders of the World. It was built in the 3rd century BC and remained operational until it was largely destroyed by two earthquakes in the 14th century. It was a tower that is estimated to have been 134 m (440 ft) high, at the time one of the tallest man-made structures on Earth. It was built of blocks of white stone. The tower was made up of three stages, a lower square with a central core, a middle octagonal section, and at the top a circular section. At its apex was positioned a mirror which reflected sunlight during the day; a fire was lit at night. As it can be seen from images of the Lighthouse on Roman coins struck by the Alexandrian mint, there were four statues of tritons blowing horns, one on every corner of the building. Also in the Roman period there was a statue atop the tower. Pharos later became the etymological origin of the word 'lighthouse' in many Romance languages, such as French (phare), Italian (faro), Portuguese (farol) and Spanish (faro).