Pharos of Alexandria

Pharos of Alexandria or simply known as Lighthouse of Alexandria was built in the island of Pharos in Alexandria, Egypt.  Because this lighthouse had become so well known, pharos became the etymology of the word lighthouse in Latin speaking countries.

Pharos of Alexandria first served solely as a landmark.  Because there was no landmark that was built in the port of Pharos, it was deemed necessary to create one.  It only became a lighthouse a few years after its construction.

It was designed by the Greek architect Sostratus under the authority of Ptolemy Philadephus.  It was built in three stages.  The lowest stage was a square, the middle was octagonal, and the highest stage was circular.  A mirror was placed at the top to reflect sunlight during the day and fire was kept burning at nights, thus providing light to a huge portion of the harbor.

It was the first lighthouse in the world and the tallest building at the time with the exception of The Great Pyramid of Giza.  Its height was about 384 feet or equivalent to a modern 40 storey building.  It stood for 1500 years, the longest standing structure on the list of the seven wonders of the ancient world, again with the exception of The Great Pyramid of Giza.  It was eventually destroyed by earthquakes.