There's a literal entrance to the 'Ghost World' hidden inside a boathouse at Viceport Docks.
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There's a literal entrance to the 'Ghost World' hidden inside a boathouse at Viceport Docks.

In the boathouse north of the central Viceport Docks, players can find a confirmed entrance to the Ghost World — a debug/developer area in GTA: Vice City where unfinished or unused map geometry exists outside the normal playable space. The same boathouse contains an unlocked safe and a displaced stool, suggesting a break-in scenario that was never explained in the game's story.

Source: Viceport Docks — CC BY-SA

The full story

The Viceport Docks overview — ground zero for hunting down the boathouse that hides the Ghost World entrance.
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The Viceport Docks overview — ground zero for hunting down the boathouse that hides the Ghost World entrance.

Inside the dock storeroom — the starting point that eventually leads to the debug Ghost World zone.
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Inside the dock storeroom — the starting point that eventually leads to the debug Ghost World zone.

The deserted northern boathouse — where the unlocked safe and displaced stool hint at a story that Rockstar never finished telling.
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The deserted northern boathouse — where the unlocked safe and displaced stool hint at a story that Rockstar never finished telling.

The saferoom inside the boathouse — the busted-open safe and knocked-over stool scream cut content, a break-in scene left unexplained in Vice City's story.
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The saferoom inside the boathouse — the busted-open safe and knocked-over stool scream cut content, a break-in scene left unexplained in Vice City's story.

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