The Castle Without a Tower — The Shimazu Philosophy
Kagoshima Castle (Tsurumaru Castle) is remarkable for what it lacks: a main tower. The Shimazu clan deliberately chose not to build a tenshu, believing their warriors — not stone walls — were their true fortress. This philosophy, similar to Takeda Shingen's famous saying, reflected the Shimazu's confidence in their military culture. The result is a castle that looks more like an administrative compound than a fortress — but the clan it housed dominated southern Kyushu for 700 years.