The ancient wonder located in Alexandria, Egypt, is the Lighthouse of Alexandria, also known as the Pharos of Alexandria. Constructed around the 3rd century BCE on the small island of Pharos, this remarkable lighthouse was one of the tallest man-made structures of the ancient world, standing approximately 100 meters high. It served as a guide for sailors navigating the busy harbor of Alexandria, utilizing a combination of mirrors and fire to create a beacon visible from great distances. The lighthouse was a testament to the engineering skills of its time and became a symbol of innovation and safety.