into place. The Hall was restored in the 19th century by architect Antoine Marie Peyrle, who added some decorative details, including sculpture on the capitals of the columns. Kitchen The kitchen pavilion was added in about 1353, shortly after the other large halls. Placed in the northwest corner, it was set slightly apart from the rest of the building, to reduce the risk of fire. It was originally installed on two levels, with the food of the royal family and guests prepared on the upper level, and for the staff on the lower level. When the King was in residence, meals were prepared in a large hearth on the upper floor, or prepared in the lower kitchen and taken upstairs on an outside ramp, no longer in existence. The kitchen originally had eight large windows, but all but two were walled up after it became a prison. Sometimes both the upper and lower kitchens were employed for an event, such as the Banquet of the Three Kings on 6 January 1378, held by Charles V to welcome his uncle, the Holy Roman Emperor Charles IV, and his cousin Wenceslaus, King of the Romans. The upstairs and downstairs kitchens worked together to prepare a banquet of three courses with ten dishes in each course, served in the Grand Hall to the royal guests and to eight hundred German and French knights. Prisoners' Corridor The upper level of the Conciergerie was considerably rebuilt in the 19th and 20th century. Nearly all of the original cells, including that of Marie-Antoinette, were demolished and replaced with new rooms. After the prison was closed and became a museum, some of the new rooms were turned into galleries. In 1989 three rooms were recreated to depict the administrative function of the prison. The first is the cell-like office of the registrar who received the incoming prisoners, enter their names into a large book, and take their belongings. This office was originally located on the ground floor, near the Cour du Mai, the main entrance of prison, where prisoners arrived. Prisoners were then taken to their cells along the Prisoner's Corridor, which extended the length of the building. Next to the recreated registrar's office is a recreation of the office of the Concierge, the warden of the prison. The third recreated room is the Grooming Room, where prisoners were taken on the day of their execution. They