Originally a royal palace, the Louvre became a public museum at the end of the 18th century. There are about 35,000 objects on display, spread out over three wings of the former palace. The Louvre was created in several phases. Originally built as a 12th century fortress, it was converted into a royal palace in the 14th century. The most recent addition to the Louvre was the construction of the glass pyramid, which frunctions as the museum's main entrance. The Louvre is about 60,000 square meters in size. Some of the Louvre's current exhibitions are the Franz Xaver Messerschimidt, Tony Cragg-Figure Out/Figure In, Egypt in Stone,Egypt in Paper and the famous painting of the Mona Lisa.