From the official site: "Sultans’s Loge, also called the Imperial Loge, are special locations for Sultan’s prayers in mosques, since sultans perform Friday and Festival prayers as well as night payers in Holy nights in the Major mosque of the city. There is no information regarding the location and creator of the first Sultan’s Loge in Hagia Sophia. Today’s Sultan’s Loge is at the left side of the altar and annexed to the structure by Fossati Brothers during the renovations performed between 1847 and 1849. Sultan’s Loge consists of a hexagonal section on a number of five columns and a corridor again on columns. Its lower part has a marble hemstitched banister panel, while the upper part is a gilded wooden cage. The ceiling of the loge is decorated with hand-drawn plant patterns."