Catalan Key

Catalan Key is an island in the Leonida Keys shown on the leaked August 2026 map with a large complex of circular structures on it, which fans are still trying to identify. Guesses range from a resort to fuel or water infrastructure.

Catalan Key sits inside Leonida Keys on the Leonida map.

Catalan Key reads like a SeaWorld-style Florida marine park on its own island. The real-world models, from SeaWorld Orlando to the Miami Seaquarium, pair dome-topped stadiums and lagoon tanks with sprawling parking lots.

The island appears on leaked map close-ups covered by multiple outlets in August 2026. Rockstar has not acknowledged the leaked material, which traces back to an old 2022 to 2023 build, so details may have changed. The Extended Look on August 27 may confirm the island officially.

The circular complex is one of the most discussed unknowns on the leaked map, since nothing shown officially so far matches it.