Bei Hai Park ,covering an area of 68.2 hectares, was the imperial garden in the Liao ,Jin ,Yuan, Ming and Qing Dynasties.The center of the park is Qiong Island , 32.8 meters high and 1,913 metres in circumference. It was made in 1179 with the earth that came from the digging of the lake . On the north shore of the lake are the Five-Dragon Pavilions, built in 1602. Not far to the northeast stands the Nine-Dragon Screen , put up in 1756, which is made of colorful glazed tiles . With nine lively dragons on each side, it has demonstrated the creativeness of the working people .