What is the end of Dragon Ball Z?

Technically Dragon Ball GT is the end of the Dragon Ball series, but the fans made up Dragon Ball AF, so I think the end of Dragon Ball Z. And you might be talking about the end of Dragon Ball Z which is when Kid Buu is destroyed, annihilated.

Wrong its over when uub the reincarnation of kid buu and goku fly away to uubs home village to train and when their done that's when GT begins Goku comes back and gets changed into a little kid