Edo had well-woven urban structures composing of waterways and streets, These structural complexities have interested researchers for a long time. The purpose of the study is to understand the principles of design in the residential areas of Edo which had not been fully understood. In the study, using modem surveying aps, the sizes of the blocks and the angles of the crossing streets were measured and analyzed, considering the effect of topography. The authors estimatedand certified the formation of the urban structure in each residential area, and the method in which the blocks were arranged concerning main streets and waterways.
