(FILES) This file photo taken on August 13, 1987 shows the construction site of "La Grande Arche", in the major business district of La Defense, in the western Paris suburb. The "tours et detours" exhibition presents the different projects imagined for the Paris business district in Nanterre from September 12, 2016. / AFP PHOTO / PHILIPPE BOUCHONPHILIPPE BOUCHON/AFP/Getty Images