Tame Ike, which was located in Akasaka, was an artificial lake constructed in the foothills of Sannō by a daimyo called Asano Yukinaga in 1606. It was supposedly a very large lake stretching eastwards to Toranomon, Shinbashi, and Shiodome, and westwards all the way to Akasaka Gomon. At the time when the Kanda waterworks and the Tamagawa waterworks had not yet been constructed, water sourced from this lake was used as supply water. The lake began to be filled in from as early as the Jhō-ōh years (1652-1655), and there were hastened works from around 1875, which drained the lake of its water and turned it into tideland. The works finished in 1910, and a narrow creek is now all that remains of Tame Ike.