Who was a beacon for sailors for more than 1500 years?

The Lighthouse of Alexandria, also known as the Pharos of Alexandria, served as a beacon for sailors for over 1500 years. Built on the small island of Pharos in ancient Egypt around 280 BC, it was one of the Seven Wonders of the Ancient World. Standing approximately 100 meters tall, it guided sailors safely into the busy harbor of Alexandria and became a symbol of maritime navigation and engineering prowess. The lighthouse remained operational until the Middle Ages, when it was eventually destroyed by a series of earthquakes.