Day23-121 千代田区霞が関二丁目　Kasumigaseki 2-chome, Chiyoda City

山手線内100日完全踏破 EveryStreetChallenge inside the Yamanote Line, Tokyo 100日で、山手線内501町丁の歩ける道をすべて歩く。 Walking every accessible road across all 501 towns inside Tokyo's iconic loop railway. https://everystreetchallenge.jp/