San Andreas Sightseer

"Explore all of Los Santos and Blaine County."

- In-game description

San Andreas Sightseer is an achievement/trophy in Grand Theft Auto V.

Acquisition
The San Andreas Sightseer achievement/trophy can be unlocked when most of the map has been explored. You do not have to reveal every last bit of the map, however; revealing around 95% of the map will unlock the trophy.

Tips

 * Flying around the map naturally will gradually count towards this achievement. Bear in mind that all the surrounding sea (only of which is indicated on the map) must be explored.