ICTP celebrated UN Day on 24 October. Trieste's other international scientific institutions - including the Third World Academy of Sciences (TWAS), the International Centre for Genetic Engineering and Biotechnology (ICGEB), the International Centre for Science and High Technology (ICS), and the InterAcademy Panel on International Issues (IAP) - joined in the festivities. Among the dignitaries attending the event were Roberto Dipiazza, mayor of Trieste; Vincenzo Grimaldi, prefect of Trieste; and ambassador Francesco Caruso, Italy's permanent representative to the United Nations Educational, Scientific and Cultural Organization (UNESCO). Highlights included a brief video message by UN Secretary General Kofi Annan; the awarding of long-service medals to ICTP staff; a photographic exhibit that will remain on display at the Adriatico Guesthouse until 12 November; and an evening concert held at the Teatro Verdi in downtown Trieste.