Nicolas Sarkozy, had talked about the idea of ranking Mont Blanc in the World Heritage of Humanity. A beautiful image in terms of respect for the environment. The case become a big issue in Chamonix with the mayor, Michel Charlet, who embarked on the adventure of the UNESCO classification. And his successor, Eric Fournier to taking over the task. But not everyone think like Chamonix. Starting with the mayor of St. Gervais, Jean-Marc Peillex, who has consistently said that the peak in question is not the exclusive property of Chamonix He prefers to see Mont Blanc classified as one of the "Great Sites France (GSF)". Where Eric Fournier sees this classification as an opportunity to save the Mont Blanc area from a tourism blind and agressive, Jean-Marc Peillex denounced the disastrous effect of a straitjacket that the UNESCO will develop, limiting the free choice of the people believed to manage their own natural and cultural heritage. What is Unesco World Heritage ? Created by Unesco in 1972, it involves nearly 900 sites worldwide in 145 countries. All must have the distinction of being "unique and universal". Three categories of classification are: cultural, natural properties and mixed properties.