4. Richman Mansion
On the surface, just going by the image attached to this entry, this one may seem to be the most boring of them all. If there's one thing we've all learned however, it's not to judge a book by the cover. That extends to mansions, for the purpose of this list. Richman Mansion is basically the Playboy Mansion, fully realised in Grand Theft Auto. It's an impressive building, even more so up close. Located on Americano Way near Vinewood Hills, everyone's favourite smutty household is free to explore, which means you won't get another of those pesky arrest warrants for trespassing on private property in real life. Yes, there are scantily-clad models, and yes, one of them even talks about 'Hef', so you know it's the real deal. You're welcome.