Four new areas of the Palace Museum, also known as the Forbidden City, will be opened to the public for the first time on Saturday since the museum was founded 90 years ago.

They are part of the Cining Palace built mainly for emperors' mothers and concubines, the Baoyun Building, a warehouse built in 1914 to store thousands of treasures, and wings of the Meridian Gate and East Prosperity Gate.

This increases the Forbidden City’s opening area to the public from 52 percent to 65 percent. The palace, which used to be home to emperors' families, is about twice the size of the Louvre in Paris.