These are called Genzon 12 Tenshu (Twelve Genzon Tenshu), Kokuho Yonjo (Four national-treasure castles) and Jubun Hachijo (Eight national-important-cultural property castles) (Jubun Hachi Tenshu (Eight national-important-cultural property Tenshu)) (For details, refer to the separate section, 'Genzon Tenshu').
これらは、現存天守現存12天守（十二現存天守）、国宝四城、重文八城（重文八天守）などと呼ばれている（詳しくは別項「現存天守」を参照）。