of the Boxer Rebellion, the Summer Palace suffered damage again when the forces of the Eight-Nation Alliance destroyed the imperial gardens and seized many artifacts stored in the palace. The palace was restored two years later. Post-Qing dynasty In 1912, following the abdication of the Puyi, the Last Emperor, the Summer Palace became the private property of the former imperial family of the Qing Empire. Two years later, the Summer Palace was opened to the public and entry tickets were sold. In 1924, after Puyi was expelled from the Forbidden City by the warlord Feng Yuxiang, the Beijing municipal government took charge of administering the Summer Palace and turned it into a public park. After 1949, the Summer Palace briefly housed the Central Party School of the Communist Party of China. Many of Mao Zedong's friends and key figures in the Communist Party, such as Liu Yazi and Jiang Qing, also lived there. Since 1953, many major restoration and renovation works have been done on the Summer Palace, which is now open to the public as a tourist attraction and park. In November 1998, the Summer Palace has designated a World Heritage Site by UNESCO. Towards the end of 2006, the Chinese government also started distributing commemorative coins to celebrate the Summer Palace as a cultural relic of the world. Attractions The entire Summer Palace is centered around Longevity Hill and Kunming Lake, with the latter covering about three-quarters of the area. Most of the important buildings were built along the north–south axis of Longevity Hill, which is divided into the front hill and the back hill. There are three small islands within Kunming Lake: Nanhu Island, Zaojiantang Island and Zhijingge Island. The West Dam of Kunming Lake divides the lake into two. The East Dam was constructed during the reign of the Guangxu Emperor. The attractions in the Summer Palace may be divided into six different sections or scenic areas: the Halls, Longevity Hill, Kunming Lake, the Farming and Weaving Picture Scenic Area, the Long Corridor, and the Central Axis area. Summer Palace is among the most-visited destinations in China, ranking in the top five, and attracts about 10 million tourists annually. Front Hill Eastern Palace Gate (simplified Chinese: 东宫门; traditional Chinese: 東宮門; pinyin: Dōnggōngmén): The main entrance to the Summer Palace. The two bronze lions on either side of the gate are preserved from the Qianlong Emperor's time