The Jiangnan region of China boasts a superior natural environment, and the combination of cities and mountains that form its historical landscape give it unique attributes. Local chronicles serve as an abundant source of information for visualizing this historic environment. This study aims to achieve two objectives: (1) to use digital humanities methods to process textual information in local chronicles, and (2) to visualize the historical relationships formed by the mountains and cities. In this study, we chose Suzhou, Zhenjiang, Jiaxing, Huzhou, and Songjiang in the Jiangnan region during the Qing Dynasty as our research sites. Through textual analysis and data visualization, we classified and reconstructed the historical spatial patterns of cities and mountains. As a result, our study provides a reproduction of the past spatial relationship between cities and mountains in the Jiangnan region during the Qing Dynasty. The research findings indicate that natural mountains play multiple roles in shaping the historical urban environment, particularly in terms of cultural images, notably the symbolic function they hold. The preservation of the urban natural environment, as seen through the vantage point of the historical landscape, is a critical component in contemporary urban development. The digital humanities methodologies utilized within this paper can be extended to other cultural heritage research, based on pre-existing local historical literature.