Takeda Castle is pretty much like Hosokawa Castle, both are earthen and wooden fortresses built on hilltops, with arrow towers and watchtowers on the walls, surrounded by moats, and then a perimeter of villages and fields; the only difference is Hosokawa Castle was left half-finished and still isn't completed to this day. Takeda Castle, on the other hand, is much more normal—at least everything that needed to be built was built.
After landing, Harano headed straight for Takeda Castle, and even made a stop to raid the villages along the way. They didn't set the troops loose to ransack and search, though, and the majority of villagers ran weeping and wailing into the wildlands and mountains—only a handful were caught and bound up.