220px-Lighthouse - Thiersch

The Lighthouse of Alexandria was a tower built between 280 and 247 BC on the island of Pharos at Alexandria,Egypt. Its purpose was to guide seaman into the port of Alexandria.

With a height variously estimated at somewhere between 393 and 450 ft (120 and 140 m),it was for many centuries among the tallest man-made structures on Earth. It was one of the Seven Wonders of the Ancient World.