The Pharos of Alexandria was the first lighthouse in the world and one of the Seven Wonders of the Ancient World. Standing over 100 meters (330 ft) tall on the island of Pharos, it was one of the tallest man-made structures for centuries. It used a massive mirror to reflect sunlight by day and fire by night, reportedly visible up to 50 kilometers away. Beyond its practical use for sailors, it was a masterpiece of Hellenistic engineering. It survived several earthquakes before finally being destroyed in the 14th century; parts of its ruins were later used to build the Citadel of Qaitbay, which still stands on the site today. The word 'Pharos' became the root for 'lighthouse' in many Romance languages, such as 'phare' in French and 'faro' in Spanish.