Every GTA city has a wealth tier. Vice City's, based on Trailer 2 frames, sits on waterfront residential islands - the Star Island / Hibiscus Island analogues. The architecture is contemporary, not period.
For the broader mansion zone context across Leonida, see the gated communities piece.
What the mansion frames show
Large modernist white-stucco houses with floor-to-ceiling glass. Pools. Private docks. Yachts moored at the back. Palm trees lined along driveways. Walls and security gates at the street side.
The properties look big, isolated, expensive. Different from the closely packed canal-side residential blocks. The visual coding is exclusivity.
Where the mansion zones sit
Plural - probably more than one mansion zone. Trailer frames suggest at least one waterfront island arrangement (Star Island analogue) and possibly inland gated communities elsewhere in the city. Specific named locations are unconfirmed.
These zones are connected to the rest of the city by short causeways or single-road approaches - constraint geography that means a chase that enters a mansion zone is harder to escape from.
What mansion zones are likely to be used for
Speculative. Story-side: cartel houses, celebrity properties, target-rich neighbourhoods for heists. GTA Online-style: purchasable properties, if a property system ships at launch. Photo / atmospheric: the kind of place screenshots get taken.
Historical comparison: GTA V's Vinewood Hills served similar functions - we discuss the parallel in the Vinewood vs Vice City wealthy zones piece.