The monument to the "Gyodai Yashiki Ruins" is located in the planting next to the East Japan Police Box at Hisamatsu Police Station 2-chome, Bakurocho, Chuo-ku.
Looking up from the monument, there is a magnificent building that looks like a chalk Hall of Fame. It's Nihonbashi Jogakuen.
In 1850, in the early summer of 1859, the Toto Shitaya pictorial map of Owariya Kiyochiita, the Asakusa Gomon, Ryogoku Hirokoji, and Ryogoku Bridge are displayed on the right (east) of the Gundaiyashiki, but this was a long time ago It was installed after the great fire of the Meiryaku era (1657 AD).
In this picture, you can also see Yagenbori. The towns of Chuo-ku are towns planned during the Edo period, so I don't think the roads have changed significantly. It's also fun to take a walk with pictures.