Council and the Federal Council while the Austrian Parliament Building is under renovation. Stallburg Although not physically connected to the rest of the complex, the imperial mews (Stallburg) of the Hofburg were originally built as a residence for the then crown prince, Maximilian. It is said that Ferdinand I did not wish to house his son under his roof, as Maximilian had veered towards Protestantism. This structure later accommodated the art collection of Archduke Leopold Wilhelm, the art-inclined brother of Emperor Ferdinand III, and the collection forms the core of the later Kunsthistorisches Museum from 1889. The residence was converted during the Baroque era to house the imperial horses on the ground floor and is used by the Spanish Riding School (Spanische Hofreitschule). St. Michael's Wing St. Michael's Wing was also planned by Joseph Emanuel Fischer von Erlach, and it serves as the connection between the Winter Riding School and the Imperial Chancellery Wing. However, because the old Imperial Court Theatre (Burgtheater) stood in the way, these plans remained unrealized until Ferdinand Kirschner built the wing from 1889 to 1893, utilizing a slightly altered plan. After the completion of St. Michael's Square, two sculpted fountains were installed on the façade of the wing: Power at Sea by Rudolf Weyr and Power on Land by Edmund Hellmer. The wing is named in reference to St. Michael's Church on the opposite side. Festival Hall Wing The walls of the Marble Hall in front of the Hall of Ceremonies date back to the 16th century and theoretically belong to the Leopoldine Wing, but the scagliola for the interior was changed around 1840 to match the appearance of the newer Hall of Ceremonies. During the imperial period it was used as a dining room and for balls for the children at court. The Hall of Ceremonies was built for Emperor Francis II/I by the Belgian architect Louis Montoyer at the beginning of the 19th century. Because of its additional nature, it formed a clearly visible protrusion at right angles to the Leopoldine Wing for almost a hundred years, and was therefore also called the "Nose". With its ornate coffered ceiling and 26 crystal chandeliers, which once held 1,300 candles, the Hall of Ceremonies was grand. The 24 Corinthian columns are done in scagliola technique, in which painted gypsum resembles marble. In this hall Napoleon I asked for the hand of Archduchess Marie Louise, the