In this video, I tried to tell in the most detailed and understandable way about the device of the most common of all interior worlds in GTA San Andreas based on my observations and studying the principles of this game. After watching this video, you will begin to understand the general size of the game world and the in-game units of measurement in which the coordinates are counted while traveling through the worlds. I also demonstrated some simple methods of getting into the interior dimensions, from which you can land in an invisible state and explore it. If you found incorrect statements in my video, please write about it in the comments. Happy viewing everyone!