pharos

The Lighthouse of Alexandria, sometimes called the Pharos of Alexandria (; Ancient Greek: ὁ Φάρος τῆς Ἀλεξανδρείας, contemporary Koine Greek pronunciation: [ho pʰá.ros teːs a.lek.sandréːaːs]), was a lighthouse built by the Ptolemaic Kingdom, during the reign of Ptolemy II Philadelphus (280–247 BC), which has been estimated to be at least 100 metres (330 ft) in overall height. One of the Seven Wonders of the Ancient World, for many centuries it was one of the tallest man-made structures in the world.
The lighthouse was severely damaged by three earthquakes between AD 956 and 1323 and became an abandoned ruin. It was the third longest surviving ancient wonder (after the Mausoleum at Halicarnassus and the extant Great Pyramid of Giza), surviving in part until AD 1480, when the last of its remnant stones were used to build the Citadel of Qaitbay on the site.
In 1994, French archaeologists discovered some remains of the lighthouse on the floor of Alexandria's Eastern Harbour. In 2016 the Ministry of State of Antiquities in Egypt had plans to turn submerged ruins of ancient Alexandria, including those of the Pharos, into an underwater museum.

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