The Cité des Sciences et de l'Industrie is the biggest science museum in Europe. Located in Parc de la Villette in Paris, France, it is at the heart of the Cultural Center of Science, Technology and Industry, a center promoting science and science culture. About five million people visit the Cité each year. Attractions include a planetarium, a submarine, an IMAX theatre and special areas for children and teenagers. The Cité is classified as a public establishment of an industrial and commercial character, an establishment specializing in the fostering of scientific and technical culture. Created on the initiative of President Giscard d'Estaing, the goal of the Cité is to spread scientific and technical knowledge among the public, particularly for youth, and to promote public interest in science, research and industry. The most notable features of the "bioclimatic facade" facing the park are Les Serres - three greenhouse spaces each 32 metres high, 32 metres wide and 8 metres deep. The facades of Les Serres were the first structural glass walls to be constructed without framing or supporting fins. Between 30 May and 1 June 2008, the museum hosted the 3rd International Salon for Peace Initiatives.