Abidjan, Addis Ababa, Barcelona, Buenos Aires, Cairo, Colombo, Ile-de-France, London, Los Angeles, Mexico, Montreal, New York, Tokyo and Turin. The Metropolis secretariat was initially established in Montreal, moving to Barcelona under the presidency of then Mayor of Barcelona, Joan Clos, in 2000. In 2004, three international associations of local and regional governments – the International Union of Local Authorities (IULA), United Towns Organisation (UTO), and Metropolis – agreed to come together to form a single organization at UCLG's founding congress.[28]