The Qaitbay Citadel is a historic fortress located in Alexandria, Egypt. It was built in the 15th century on the site of the ancient Pharos lighthouse, one of the Seven Wonders of the Ancient World. The Qaitbay Citadel is a massive stone fortress with a circular shape. It features a lighthouse, a mosque, and a museum. The citadel offers panoramic views of the Mediterranean Sea and the city of Alexandria.