Palace of Versailles as Seen from the Gardens. This side of the palace is almost 2000 feet long. The portion seen in this picture contains the Gallery of Mirrors, so named from the seventeen large mirrors which occupy the side of the room opposite the round arched windows on the second floor. It was in this great hall that the Treaty of 1919 with Germany, ending World War I, was signed by delegates representing nearly nine-tenths of the population of the globe. [Picture taken circa 1920.] Click here to enlarge.