The important ancient city known for its lighthouse, one of the Seven Wonders of the Ancient World, was Alexandria in Egypt. Founded by Alexander the Great in 331 BC, Alexandria became a major center of commerce, culture, and learning. The Lighthouse of Alexandria, also known as the Pharos of Alexandria, stood on the small island of Pharos and served as a guide for sailors navigating into the city’s bustling harbor. Constructed during the reign of Ptolemy II, the lighthouse was an engineering marvel of its time, standing approximately 100 meters tall. It symbolized the city’s prosperity and significance as a hub of knowledge.