Headquarters of the International Civil Aviation Organization (ICAO), a specialized agency of the United Nations. Outside the Atrium entrance is a sculpture by the Québec artist Marcelle Ferron entitled “Le Miroir aux alouettes”. The massive illuminated hall adjoining the skyscraper often hosts exhibits featuring Montréal artists. The view outside is breathtaking, on one side is Square Victoria and on the other is the downtown Delta Hotel with its revolving panoramic restaurant.