London, United Kingdom, 22 October 2015 - His Highness the Aga Khan delivered the keynote address at a major conference of the International Council on Monuments and Sites (ICOMOS) on Thursday, 22 October 2015 in the United Kingdom. ICOMOS has a special role as official adviser to UNESCO on cultural World Heritage Sites. Though the Historic Cities Programme of the Aga Khan Trust for Culture, the AKDN is experienced in leveraging the restoration of historic structures and the creation and rehabilitation of public spaces, parks and gardens as catalysts for social, economic and cultural development.