“…Recent research has accurately clarified the entire contents of the Explanation of the Plan for Ōsaka 9 (hereinafter the “Explanation”) which explains the details of this plan, pointing out the features of the plan's contents, ranging from Gairo (Street Design) to Chōmei, Banchi, Uramichi, Kōji, Tou (Quarter Naming, Lot Numbering, Backstreets, Alleys, and others, hereinafter referred to as “urban area design”). It also highlights Yamaguchi's learning experience in Europe and the plan's strong linkage with the Ōsaka Port Construction Project 11–14 . In consideration of these new findings, it is necessary to review the impact of the Plan for Ōsaka 1899 on subsequent urbanization, and to reconsider its significance as an urban planning proposal.…”