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Cut Metro signpost
|The following is based on Fallout 3 cut content and has not been confirmed by canon sources.|
Crystal City was cut from Fallout 3.
Behind the Scenes
In real life, Crystal City is located directly and shortly south of the Pentagon, easily seen on a map. It is highly plausible that Crystal City was an early version of the Mason District, since there is no such area in real life as the "Mason District", and also that the Mason District is in roughly the same location in which Crystal City seemingly would be.