The Pavillon de l’Horloge ("Clock Pavilion"), also known as the Pavillon Sully, is a prominent architectural structure located in the center of the western wing of the Cour Carrée of the Palais du Louvre in Paris. Since the late 19th century, the name Pavillon de l'Horloge has generally been applied to the structure's eastern face, which dates from the 17th century, and the name Pavillon Sully to its western face, which was redecorated in the 1850s as part of Napoleon III's Louvre expansion.