In 1895, the Nantes-based biscuit makers Lefèvre-Utile (LU), famous for their petit beurre cookies, built a factory on quai Ferdinand-Favre to develop new products. The structure, made entirely of concrete and metal, was innovative for its time and the two magnificent junction towers, which were added in 1909, make it one of Nantes’ most iconic buildings. The lieu unique opened on the 30th of December 1999, during the "End of century" festival in Nantes. This opening was marked by the Grenier du siècle (The Store of the century). A translucent double wall was designed to receive an important collection of objects given by the population. Put in cans, these objects are going to stay a whole century in this Store, until its opening on 1 January 2100 at 5pm.