Hokage Residence
From Narutopedia
The Hokage Residence is a large mansion occupied by the Hokage during their reign, and is located close to both the Ninja Academy and Hokage Monument. Built during the reign of the First Hokage, the Hokage mansion it was occupied by Tsunade, the Fifth Hokage, before it was destroyed by Deva Path large scale Shinra Tensei during Pain Invasion of Konoha. It is filled with many forbidden scrolls, in which lies the secrets to many jutsu. Shortly before Tsunade becomes Hokage, Konohamaru, the Third Hokage's grandson, locks himself in the Hokage Mansion and sets it full of traps, although Tsunade easily managed to get past them all.
