The 16^th to 18^th centuries witnessed the peak time of Suzhou classical gardens, featuring around 250 gardens. A survey from 2015 to 2018 showed that Suzhou is home     1     108 classical gardens, 57 of     2     are in the historical neighborhood of Gusu District. The gardens reflect the importance of natural beauty in Chinese culture. Great Wave Pavilion, which     3     ( build ) in the 11th century, is the oldest existing garden in Suzhou.