Located in the western part of Shanghai, and completed in 1959, Changfeng Park is home to largest manmade lake, Yinchu (Silver Hoe) Lake, and the highest manmade hill, Tiebi (Iron Arm) Hill. The park was designed using traditional Chinese techniques, and it is similar to those in Beijing, Hangzhou and Suzhou gardens. In addition to the park's 20 scenic spots, it is also home to the Shanghai Ocean Aquarium, with its 300-plus species of marine life. Visitors can also take diving lessons at Aquaria 21.