Where is All Blue located? After reading this question, I looked through some One Piece world maps as you can see below and they made me wonder. Where would All Blue even be at? All Blue is supposedly the place where the four seas meet.


  The All Blue is a mystical sea of legend, rumoured to be the only place in the world where the North, South, East, and West seas meet.


Since the four seas are separated from each other by the Grand and Red line, how and where would they be able to meet? Where would All Blue be at?






There is even this interactive world map if you would be interested.
There is no canon or non-canon answer from the One Piece universe.  Sanji referred to a lake on Fishman island as his All Blue but that was not serious (I think). Until Oda says, we don't know.

We could speculate it could be reverse mountain, or a bay at Raftel, or a cavern deep underground, or Vegapunk's research aquarium on the moon, or an alternative dimension (an island ate a devil fruit?), or ..... The point is that Oda is very creative.  It could be many things as a result.