Abstract
The castle town of Osaka had unique urban fabric composed of well-developed infrastructure, such as streets, waterways and drainage. However, the principles of the design of the castle town have not been fully understood.
The purpose of this study was to understand the principles of the design of Ue-machi district in the castle town of Osaka. In this study, first of all, the new methodology of the quantitative analysis to understand the principles by using modern surveying maps has been shown. Then, applying the methodology, standards and modules of block layouts, design units, and the process of the development in Ue-machi District in the castle town of Osaka has been understood.