The hub of construction activity in La Défense at the edge of Paris is a scene most urban-minded individuals would love to see replicated in their hometowns. And as tower cranes dot the growing skyline, there's further evidence of work moving forward at the site of a future 39-storey office tower that will house the headquarters of French multinational corporation Saint-Gobain. In the months since our last photo update, crews have made significant progress on the demolition of the eight-level Tour Iris office complex, a necessary step to accommodate its modern glass successor.