An unmarked location in Fallout 4 constitutes an in-depth reference to a classic TV show. Although Fallout 4 takes a lot of liberties with its portrayal of a post-nuclear Boston (the so-called Commonwealth), there’s a measure of accuracy in the landmarks it includes.The Old North Church becomes the HQ of Fallout 4‘s Railroad, MIT is renamed the Institute, and of course, Fenway Park transforms into the bustling Diamond City.