(66 ft) tall stone base, measures three stories and 41 metres (135 ft) in height, and is supported by eight ironwood pillars. Empress Dowager Cixi visited the tower to offer incense and pray. Sea of Wisdom (智慧海; Zhìhuìhǎi): Located on the peak of Longevity Hill. It was built from coloured glass and houses over 1,000 statues of Buddhist figures. It was partially damaged during the Cultural Revolution. Stele of Longevity Hill and Kunming Lake (万寿山昆明湖碑; 萬壽山昆明湖碑; Wànshòushān Kūnmínghú Bēi): Located east of the Hall of Dispelling Clouds. The stele bears six Chinese characters written by the Qianlong Emperor. Pavilion of Precious Clouds (宝云阁; 寶雲閣; Bǎoyúngé): Located west of the Tower of Buddhist Incense. It was originally called the "Bronze Pavilion" (铜亭; 銅亭) and was built in 1755. The doors and windows were stolen by soldiers from the Eight-Nation Alliance in 1900. In the 1980s, they were purchased by overseas Chinese and donated back to the Summer Palace. Stone Boat (石舫; Shífǎng): The Stone Boat is 36 metres (118 ft) long. The original wooden boat was burnt in 1860 and has been replaced with a marble copy with western-style paddle wheels.[1] Oriole-Listening Hall (听鹂馆; 聽鸝館; Tīnglíguǎn): Located west of Longevity Hill. It used to be where Empress Dowager Cixi watched opera performances. The hall is now converted into a restaurant specialising in Qing imperial cuisine. Huazhongyou (画中游; 畫中游; Huàzhōngyóu): Located west of Longevity Hill. East of the Front Hill (前山东部; 前山東部; Qiánshān Dōngbù): Has many pavilions and halls. West of the Front Hill (前山西部; Qiánshān Xībù): Has many pavilions and halls. West of the Long Corridor (长廊西端; 長廊西端; Chángláng Xīduān): There is a "West Four Hall" (西四厅; 西四廳) located north of Shizhang Pavilion. The Guangxu Emperor's Consort Zhen was confined in the hall by Empress Dowager Cixi. It used to be the west entrance into the Summer Palace during the Qianlong Emperor's time. Back Hill Suzhou Street (苏州街; 蘇州街; Sūzhōujiē): In 1762, after returning from touring the Jiangnan region, the Qianlong Emperor ordered the construction of a shopping street resembling Shantang Street in Suzhou. The street was destroyed by the British and French in 1860 and was only restored in 1988. Garden of Harmonious Pleasures (谐趣园; 諧趣園; Xiéqùyuán): Located in the northeast corner of the Summer Palace. In 1751, when the Qianlong Emperor toured the Jiangnan region, he was so impressed with Jichang Garden in Wuxi that he ordered a Huishan