The Citadel of Cairo, also known as the Citadel of Saladin, is a historic Islamic fortification located in Cairo, Egypt. Built in the 12th century by Salah ad-Din (Saladin), it served as a military stronghold and the seat of government for several centuries. The citadel features impressive walls, towers, and several important mosques, including the famous Mosque of Muhammad Ali. Today, the citadel is a popular tourist attraction, offering stunning views of Cairo and its surroundings. It is a UNESCO World Heritage site, recognized for its architectural significance and historical importance in the Islamic world. Visitors can explore its museums and learn about Egypt's rich history.