The Ibn Tulun Mosque was completed in 879 AD. The mosque was built by Ahmed Ibn Tulun, a Turkish slave from Bakhara, over a period of 3 years of mud brick, The Mosque became focal point of the Tulunid Capital that lasted 26 years. The mosque is the third largest mosque in the world, and the oldest mosque in Egypt that has survived in a fairly original form. The Gayer Anderson Museum was the residence of Gayer Anderson (1881- 1945) a British officer in the Egyptian army, and a physician for the Egyptian government. Gary loved the Egyptian culture; he filled his house with oriental furniture, glassware, crystal, carpets, silks, and embroidered Arab costumes not only from Egypt, but from Turkey, Persia, Syria and other oriental areas. He made his house into historical treasure. 1937 his house was made into a museum.