Citadel of Qaitbay
The Citadel of Qaitbay (or the Fort of Qaitbay) (Arabic: قلعة قايتباي) is a 15th-century defensive fortress located on the Mediterranean sea coast, in Alexandria, Egypt. It was established in 1477 AD (882 AH) by Sultan Al-Ashraf Sayf al-Din Qa'it Bay. The Citadel is situated on the eastern side of the northern tip of Pharos Island at the mouth of the Eastern Harbour.
The Qaitbay Citadel in Alexandria is considered one of the most important defensive strongholds, not only in Egypt, but also along the Mediterranean Sea coast. It formulated an important part of the fortification system of Alexandria in the 15th century AD.
The Citadel is situated at the entrance of the eastern harbour on the eastern point of the Pharos Island. It was erected on the exact site of the famous Lighthouse of Alexandria, which was one of the Seven Wonders of the Ancient World. The lighthouse continued to function until the time of the Arab conquest, then several disasters occurred and the shape of the lighthouse was changed to some extent, but it still continued to function. Restoration began in the period of Ahmed Ibn Tulun (about 880 AD). During the 11th century an earthquake occurred, causing damage to the octagonal part. The bottom survived, but it could only serve as a watchtower, and a small mosque was built on the top. In the 14th century there was a very destructive earthquake and the whole building was completely destroyed.
About 1480 AD, the Circassian Mameluke Sultan Al-Ashraf Qaitbay fortified the place as part of his coastal defensive edifices against the Turks, who were threatening Egypt at that time. He built the fortress and placed a mosque inside it. The Citadel continued to function during most of the Mameluke period, the Ottoman period and the Modern period, but after the British bombardment of the city of Alexandria in 1882, it was kept out of the spotlight. It became neglected until the 20th century, when it was restored several times by the Egyptian Supreme Council of Antiquities.
...
Wikipedia