Pavillon de l'Horloge

The pavilion was built just north of the older Lescot Wing between 1624 and about 1645, a protracted process because of the difficulties faced by France in the late 1620s and 1630s. The structure and its iconic square-domed roof were designed by architect Jacques Lemercier, who was selected in a competition in 1624. On 1 September 1794, a semaphore or of the type recently invented by Claude Chappe was installed at the top of the Pavilion. It remained there until 1806, when it was removed for aesthetic and safety reasons by the Louvre's architect Pierre-François-Léonard Fontaine. In the early 19th century, a clock () was placed on the attic level, giving the pavilion its current name. The western façade was comprehensively remodeled by Hector-Martin Lefuel in the 1850s during the Second Empire. that is when the name of Pavillon Sully (after Maximilien de Béthune, Duke of Sully) was given to it. Lefuel also rebuilt the structure's two iconic chimneys, which had been demolished in the early 19th century. ==Interior==

, unveiled on by French President François Hollande and UAE Foreign Minister Abdullah bin Zayed Al Nahyan The underground level or was first designed in the 1930s by Louvre architect Albert Ferran as part of a broader plan to create a seamless museum itinerary on the ground level of the Cour Carrée. It was remade in the 1980s as part of the Grand Louvre project, under which it also connects the underground spaces beneath the Louvre Pyramid with the newly established rooms preserving the remains of the Medieval Louvre. On the first floor above the passageway are a corridor linking the two monumental staircases that flank the Pavilion and, facing the Cour Napoléon, a large room that was fitted in the 1650s to be the Louvre Palace Chapel. This room, the , used to be of double height but was vertically partitioned in the 18th century to create space in the attic. A 1915 project to restore the double height was left unimplemented. On its entrance door is a wrought iron gate originally from the Château de Maisons, installed there in 1819 by architect Pierre Fontaine. On the second floor or attic, the main room above the former chapel has been devoted since 2016 to information about new developments at the Louvre and its two satellites in Lens, Northern France and Abu Dhabi, UAE. It was then known as , as a tribute to businessman Alphonse Delort de Gléon (1843–1899) and his wife Marie–Augustine (1852–1911), who bequeathed Islamic art pieces that joined the Louvre's collection in 1912. This room, however, was partitioned in 1979 to create reserve space for the Louvre's paintings collection, and further partitioned in the 2000s so that it now has four levels inside. File:Debucourt-Louvre-facade-seen-from-rue-Fromenteau.jpg|Lemercier's western façade from the former rue Fromenteau, late 18th century File:Pavillon Sully Louvre 2007 06 23.jpg|Western façade of the Pavillon Sully, redesigned by Hector Lefuel File:Louvre covered passage, 5 April 2015.jpg|Covered passageway or of the Pavillon Sully ==See also==