Bailey's Crossroads Metro

 is a part of Washington, DC's old Metro system which connects an entrance near Red Racer Factory to Bailey's Crossroads. You can enter the station through a door south of the Red Racer Factory, near the collapsed regular metro entrance.

It is inhabited by Feral Ghouls. There are a few misc items scattered about but on the lower level of the station if you search a bit you'll find a makeshift bed by a broken toilet, around which is some ammo, chems, and cigarettes. There is also a secret area in the lower area of the metro. Once you decend the stairs there will be a mound of rubble with crashed trains you can climb over it revealing a area with a bb- gun and an assortment of other items.