Le Grand Louvre: Henry IV decided to mute the Louvre and Tuileries ensemble a sort of huge royal city, able to host the royal servants, nobles and even artists since 1608 in the Grande Gallerie, along the Seine between the two palaces. The hidden goal of the operation was to build two aisles in order to unite them.

In 1610, the death of Henri IV, assassinated by Ravaillac, temporarily halted the realization of this goal, mostly visible through the building of the Petite and Grande Galeries, and the Pavilion des Tuileries, doing the junction. Louis XIII ordered the destruction of another part of the medieval citadel, and initiated the building of a new pavilion, de l'Horloge, and an aisle located after the Henri II facade. The Louvre was going to multiply by 4 its size.