Shi Cheng, dubbed “Lion City” is a submerged metropolis sitting 26 meters to 40 meters below the Qiandao Lake ( Thousand Island Lake) located in Chun’an County, Zhejiang, China. In 1959 the Lion City has been submerged under Qiandao Lake by the Chinese government for the construction of the Xin’an River Hydropower Station.
From Wikipedia: “At the foot of Wu Shi Mountain (or “Five Lion” Mountain) lies an ancient city known as Shi Cheng (“Lion City”). It was built during the Eastern Han Dynasty (AD 25 – 200) and was first set up as a county in AD 208. This city acquired the name “Shi Cheng” from nearby Wu Shi Mountain, which is located just behind the city. At present Shi Cheng remains undisturbed at a depth of 26-40m.”