Is it not a widely accepted knowledge that the One Piece world is

Grand Line, One Piece Wiki

One Piece' Arcs in Order: Your Guide to Skipping the Filler Episodes

Crunchyroll Slates 'One Piece Film Red' Releases with New Trailer, Images

Red line is based on the Paris meridian and One piece could refer to a legendary treasure hidden in France : r/OnePiece

How big is the One Piece universe? We entered the new world around episode 500 and there is like 1,100. We haven't even gotten halfway or to One Piece yet. - Quora

One Piece · Season 11 Episode 385 · Arriving at Halfway Through the Grand Line! The Red Line - Plex

Before One Piece Episode 1062 drops, here's every Straw Hat Pirate's Dreams - Spiel Anime

New ONE PIECE magazine Vol.13 Includes Limited Edition Poster Jump Comic JAPAN

One Piece: Entering Into the Grand Line - Rotten Tomatoes

One Piece (TV Series 1999– ) - IMDb