Generate a massive, highly detailed...

Generate a massive, highly detailed, and fully explorable 1:1 scale recreation of Marineford Headquarters from One Piece. Build the entire fortress, including the iconic main headquarters, giant defensive walls, towers, gates, battlements, courtyards, execution plaza, docks, stone bridges, staircases, guard towers, and all exterior structures. The terrain must not be flat. Create realistic cliffs, elevation changes, slopes, rocky coastlines, retaining walls, and natural terrain surrounding the fortress. The build should blend naturally into the landscape and be surrounded by ocean. Every building must have a complete and detailed interior. Do not leave any empty shells. Include connected hallways, staircases, corridors, meeting rooms, offices, barracks, dormitories, kitchens, storage roo