Beihai Park is located in the central area of Beijing, on the west side of Jingshan in the city and to the northwest of the Forbidden City. Together with Zhonghai and Nanhai, it is called the Three Seas. It is an ancient Chinese royal garden. The whole park is centered on Beihai, covering an area of about 71 hectares, with 583 mu of water and 480 mu of land. It was originally a palace built by the Liao, Jin and Yuan dynasties, and was opened as an imperial garden by the Ming and Qing dynasties. It is one of the oldest, most complete, most comprehensive and representative royal gardens in China. It was opened as a park in 1925. It is the oldest and most complete royal garden preserved in China. The pavilions in Beihai Park are unique and the corridors are tortuous. The whole park is conceived and laid out in the mythical "one pool and three immortal mountains" (Taiye Lake, Penglai, Fangzhang, and Yingzhou), with a unique form and rich fantasy. Here, the water is open, the lake and tower shadows, the green pines and cypresses, the fragrance of flowers and trees, the pavilions, towers, stacked stones and caves are gorgeous and beautiful, like a fairyland. There is a 67-meter-high Tibetan-style white pagoda (built in 1651) on Qiongdao Island, as well as the Qiongdao Chunyin stele, one of the eight scenic spots in Yanjing inscribed by Emperor Qianlong of the Qing Dynasty, as well as rockery and deep caves. On the northeast bank are buildings such as Huafangzhai, Haopujian, Jingqingzhai, Tianwang Hall, Wulong Pavilion, and Jiulongbi. To the south is Beihai Tuancheng, which stands on the waterfront. Among the lush pine and cypress trees on the city, there is the exquisitely shaped Chengguang Hall. Beihai Park is a place for the emperor to entertain himself. Its Jiulongbi is the most famous. Beihai is an artistic masterpiece of Chinese historical gardens. The entire park covers an area of 69 hectares (including 39 hectares of water surface), mainly consisting of Qionghua Island, East Bank, and North Bank scenic areas. There are luxuriant trees, numerous palaces, pavilions and towers on Qionghua Island, and a white pagoda standing on the top of the mountain, which has become the symbol of the park. Willow trees around the lake shade many famous attractions, such as Haopujian, Huafangzhai, Jingxinzhai, Tianwang Hall, Kuaixuetang, Jiulongbi, Wulongting and Xiaoxitian. Beihai Garden draws on the strengths of many other gardens, with the grandeur of northern gardens and the graceful charm of private gardens in the south of the Yangtze River, as well as the magnificence of imperial palaces and the solemnity of religious temples. It is a treasure of Chinese garden art with a variety of atmospheres and yet is integrated into one.