Castle Dedede (actually Dedede's Wooden Box) is where Dedede lives. It is on top of Mt. Dedede. Dedede claims to have a hallway and a boxing ring, but the "hallway" is just when the gardener shove off too much grass, when Dedede saw this, he placed "walls" and a "ceiling" to convice people that it's a hallway (wich nobody believes), and the boxing ring are just some ropes in the form of a square.