Built in 1581 by Takeda Katsuyori, the last Takeda lord, as a new headquarters to replace the Tsutsujigasaki residence in Kofu, the castle displays advanced construction techniques including outworks and circular horse-forts. However, within just a few months of its completion, Katsuyori set it ablaze and fled in the face of Nobunaga's invasion, and the Takeda clan fell in 1582.

Shinpu Castle was built by Shingen's grandson Katsuyori in 1581 to replace Shingen's Tsutsujigasaki residence as the Takeda capital. Its sophisticated earthworks represent the culmination of military engineering knowledge accumulated under Shingen. Yet after Shingen's death the clan's authority unraveled rapidly, and Katsuyori burned the castle himself as Nobunaga closed in—making it both the culmination and the epitaph of Shingen's legacy.

Shinpu Castle, built by Takeda Katsuyori, was abandoned and burned by its own lord just months after completion, in the face of Oda Nobunaga's invasion.