State of Leonida Decoded: Every Region, Biome & Landmark Confirmed by Rockstar Games

Rockstar Games officially described Grand Theft Auto VI as heading to the State of Leonida, home to the neon-soaked streets of Vice City and beyond in the biggest, most immersive evolution of the Grand Theft Auto series yet. Our cartography team cross-referenced every frame of official footage with Florida geographical parallels.
Unlike 2002's Grand Theft Auto: Vice City—which focused strictly on the urban islands of Vice City—GTA VI encompasses an entire state ecosystem: the State of Leonida.
Official footage and regional dossiers confirm at least six distinct major territories: Vice City, the Leonida Keys, Grassrivers, Port Gellhorn, Ambrosia, and Mount Kalaga National Park.
Each biome introduces specialized vehicle ecosystems, from fan-driven airboats in Grassrivers and lifted swamp buggies at the Thrillbilly Mud Club to amphibious floatplanes skimming the Leonida Keys.