The Lighthouse of Alexandria was one of the Seven Wonders of the World and the most famous lighthouse in antiquity. It was a technological triumph and is the archetype of all lighthouses since. Built by Sostratus of Cnidus, perhaps for Ptolemy I Soter, it was finished during the reign of Soter’s son Ptolemy II of Egypt in about 280 BCE. The lighthouse stood on the island of Pharos in the harbor of Alexandria and is said to have been more than 350 feet high; the only taller man-made structures at the time would have been the pyramids of Giza.

Source: Britannica