Pierre Paulin, is a complete contrast to most of the other rooms in the palace. It was designed as a private dining room for President Georges Pompidou and his wife Claude, and the interior and furniture date from the 1970s. The walls are made of 22 polyester panels, the chairs have a single leg attached to a round base, and the round table is made of glass. The room is lit by roof panels decorated with glass balls and rods. The Salon des Portraits (Portrait Room) was used by the Emperor Napoleon III for portrait medallions of the most important sovereigns of the time, replacing earlier portraits of the Bonaparte family installed by Joachim Murat. The portraits are of: Pope Pius IX, Emperor Franz Josef I of Austria-Hungary, Queen Victoria of the United Kingdom, King Victor Emmanuel II of Italy, Tsar Nicholas I of Russia, King Frederick William IV of Prussia, Queen Isabel II of Spain and King William I of Württemberg. Previously a dining room, President Nicolas Sarkozy used the room as his second office. The Salle des Fêtes (Hall of Festivities) dominates the west wing of the palace. It was designed by and opened on 10 May 1889 by the then President, Sadi Carnot, to coincide with the Exposition Universelle that year. The room has paintings on the ceiling called "La République sauvegarde la Paix" (The Republic Safeguards Peace), painted by Guillaume Dubufe in 1894. There are also six Gobelins tapestries in the room, which is predominantly laid out in red and gold decor. In 1984 President François Mitterrand added ten windows to the room to let in more light. It is in this room that all French Presidents are inaugurated, and where they host official conferences and banquets. The Jardins d'Hiver (Winter Gardens) was built in 1883 as a greenhouse for growing plants. Today it is no longer used for this purpose, being instead an extension of the Salon des Fêtes, and used for official banquets. There is a Gobelins tapestry on the wall, and three chandeliers hang from the ceiling. The Salon Murat (Murat Room) is used every Wednesday by the President for meetings with the Prime Minister and the rest of the Government of France, along with the presidential secretary, known as the "Secretary-General of the Élysée". It was also in this room that Konrad Adenauer, Chancellor of Germany, signed the Élysée Treaty in 1963.