Changshu is a county-level city under the jurisdiction of Suzhou, Jiangsu Province, and is part of the Yangtze River Delta. The city covers an area of 1276 square kilometers (including the Yangtze River water area). In Chinese county-level city, it is the first city owning the title of “National Garden City” and “International Garden City”. For the past 5 years, income from the tourism sector has increased on average by more than 20% on a yearly basis. Meanwhile, the number of visitor has risen by more than 10% yearly. The observatory focuses on two major themes: 'the development of the tourism industry in developed areas and enhancement of residents' quality of life and overall happiness' as well as 'the development and ecological conservation of the tourism industry in developed areas'.