More than one sovereign has left his mark on the walls of the Louvre. The western wing bears the monogram of Louis XIII. and Anne of Austria; also of Louis XIV. and Marie Thérèse. In the north wing, the letters L. B. are to be seen, signifying Louis de Bourbon, an extremely rare form of the name of Louis XIV. On the south wing, several K's are to be seen, standing for "Karolous," or Charles IX. Look to the east, and the Napoleonic empire is symbolised by several eagles. The Louvre, as we know it, with its magnificent gallery of pictures open to the whole world, dates only from the Revolution. There were from the time of Francis I. pictures in the old palace, and the collection was constantly increased under his successors. But the galleries were private. They were reserved for the delectation of the sovereign and his court. At the very beginning, however, of the Revolution, the Louvre was literally invaded, and some of the unfinished portions were finished in an unexpected manner by being converted into private dwelling houses. But the Republican Government soon put an end to this; and it was under the Convention that the picture gallery of the Louvre, increased by works of art from other palaces, was for the first time thrown open to the public. To speak only of the building, it was continued by the Republic, and all but completed by Napoleon, who, after appointing a committee of artists, and receiving from them a report in favour of Pierre Lescot's design, determined, on his own responsibility, to finish the Louvre according to the later design of Claude Perrault. Napoleon wished, moreover, to join the Louvre to the Tuileries, so as to make of the two palaces one immense palace. Two architects, Percier and Fontaine, were ordered to put this project into form, and they presented their plans to the Minister of Fine Arts in 1813. But the Imperial Government was now near its fall, and it was not during the calamitous retreat from Moscow that architectural projects of any kind could be entertained. Under the reigns of Louis XVIII. and Charles X. the halls of the Louvre were redecorated. When Louis Philippe came to the throne, M. Thiers, his Minister, laid before the Chambers a proposition for joining the Louvre to the Tuileries at a cost of fourteen million francs. But the Bill was thrown out, and a similar one presented to the Chamber ten years later, in 1843, met with the same fate.