Tameike-sanno Culture and History: The Former Reservoir and Hie Shrine

The station name preserves two important layers of local history. According to Minato City's history of place names, the Tameike reservoir was constructed around 1606 under feudal lord Asano Yoshinaga. It formed part of Edo Castle's outer defensive system while also functioning as a water reservoir serving southern Edo. The large body of water once extended along the present Sotobori-dori area toward Akasaka-mitsuke and appeared in ukiyo-e prints. Progressive reclamation and urbanization eventually removed the reservoir, but the name survives in locations such as Tameike intersection. The Sanno portion of the station name refers to nearby Hie Shrine, historically associated with Edo Castle and the Tokugawa government and well known for the Sanno Festival. Today's skyline is dominated by offices and international business, yet old slope names such as Enokizaka, Hie Shrine and surviving historical place references reveal the area's transition from Edo landscape to modern central Tokyo.