Rockstar Games put a lot of effort into making the world of Grand Theft Auto 5 as detailed as possible. Technological advancements since the launch of GTA San Andreas have made it possible to represent real-life Los Angeles and the surrounding area in great detail and accuracy.
While strolling through the virtual streets of Los Santos may not measure up to an actual trip to LA, it is the next best thing. Rockstar also went into incredible detail while recreating much of the city, however of course some concessions had to be made.
Size was dialled down immensely, the street plan was simplified and landmarks had to be juggled to fit them into a much smaller area, while still being roughly in the same place in relation to one another. The shape of the city also had to be changed, and the agglomeration around it erased, leaving just Los Santos itself instead of the urban sprawl Los Angeles is part of.
In spite of these necessary changes, the end result is still astonishingly accurate, and is possibly the most accurate in-game depiction of an existing location to date. Pretty much every building you see in the game exists or existed in real life and is roughly in the same place, even if its purpose is different.
This doesn't only apply to major landmarks. Rockstar could have just paid attention to plonking the popular tourist attractions in the right place and called it a day, not unlike most other games did in the past. But they went above and beyond. I wouldn't be surprised if organizing the map and creating all those visual assets took up a much larger part of the development time than those tasks usually do.
Attention has been paid to mundane things too, not just the big, notable locations. For example, Lester's warehouse being an actual warehouse in real life, and looking exactly the same.
All that said, let's look at some of the most notable real-life buildings in GTA 5.
Vinewood Sign


Obviously, the first thing that most people, especially foreigners, think about when hearing "Los Angeles" has to be the huge Hollywood sign.
It's that one stereotypical characteristic of the city which is the only thing a bunch of people who haven't ever been there will automatically think about, and that one characteristic that locals would wish the world would forget because there are so many other great things the city could be known for.
That huge sign sticking out of the side of Mount Lee has been recreated in GTA 5 as the iconic Vinewood sign planted on the renamed Vinewood hills.
Its position compared to the bulk of the city is fairly different, as in real life the northern chunk of Los Angeles wraps upward, and the southern half of the city extends below it to the east, while in-game the sign is located at the far north-east corner of the city and is pretty outlying.
Nonetheless, the way the letters are organized with a slight wave in them is perfectly accurate.