Now cross the square directly to the =Pavillon de l’Horloge=, as it is called, from the clock which adorns it. To your L, on the floor of the court, are two circular =white lines=, enclosed in a square. These mark the site of the original _Château_ of the Louvre, with its Keep, or _donjon_. François I^{er}, who began the existing building, originally intended that his palace should cover the same area. It was he who erected the L wing, which now faces you, marked by the crowned H on its central round gable, placed there by his successor, Henri II, under whom it was completed. To the same king are also due the monograms of H and D (for Diane de Poitiers, his mistress), between the columns of the ground floor. The whole of the Pavillon de l’Horloge, and of this west wing, should be =carefully examined in detail= as the finest remaining specimen of highly decorated French Renaissance architecture. (But the upper story of the Pavillon, with the Caryatides, is an age later.) Observe even the decoration lavished on the beautiful chimneys. Pierre Lescot was the architect of this earliest wing; the exquisite sculpture is by Jean Goujon, a Frenchman, and the Italian, Paolo Ponzio. Examine much of it. The crossed K’s of certain panels stand for Catherine de Médicis. The R wing, beyond the _Pavillon_, was added, in the same style, under Louis XIII, who decided to double the plan of his predecessors, and form the existing Cour du Louvre. The other three sides, in a more classic style, with pediments replacing the Pavillons, and square porticoes instead of rounded gables, are for the most part later. The S side, however, as far as the central door, is also by Pierre Lescot. It forms one of the two fronts of the original square first contemplated. The attic story of these three sides was added under Louis XIV, to whom in the main is due this Cour du Louvre. A considerable part of Louis XIV’s decorations bear reference to his representation as _le roi soleil_.