Of course it's the KG, it was said twice in BBS (once by Xehanort and another by Vanitas) that it is the only place where the X-blade can be forged.
It is more than blatantly shown in the DDD opening and it more or less was also the very place where everything began four years before BBS when MX created Vanitas.
Also, on a funny sidenote, I certainly wonder why so many of you rant about the atmosphere in this world. It is supposed to be a desolate, bland wasteland because nearly everything was destroyed there.
The KG is in essence nothing but a battlefield to duke it out, not a world you would want to explore because there is nothing to explore except rocks, dust and several thousand old Keyblades lying around.
It is more than blatantly shown in the DDD opening and it more or less was also the very place where everything began four years before BBS when MX created Vanitas.
Also, on a funny sidenote, I certainly wonder why so many of you rant about the atmosphere in this world. It is supposed to be a desolate, bland wasteland because nearly everything was destroyed there.
The KG is in essence nothing but a battlefield to duke it out, not a world you would want to explore because there is nothing to explore except rocks, dust and several thousand old Keyblades lying around.