The British-Iranian collector Nasser Khalili has assembled, conserved, published and exhibited eight art collections, including the largest private collection of Islamic art.[14][2] Patricia Scotland, Secretary-General of the Commonwealth of Nations, has described Khalili's collection as, alongside the Topkapı Palace museum in Istanbul, "the largest and most significant group of objects relating to the cultural history of the Hajj".[15] Baroness Amos, Director of the School of Oriental and African Studies in London, has described it as "the greatest collection of objects related to Makkah [Mecca] and the Hajj."[16]