Railroad HQ is the underground headquarters of the Railroad as of 2287.
Buried in the catacombs of the Old North Church, the Railroad headquarters house all that remains of the resistance organization.
The headquarters are located inside the catacombs and their layout is dictated by the ancient corridors. The left side of the catacombs contains Doc Carrington's realm (offering healing), P.A.M., and a power armor station. To the left is Tinker Tom and a small shooting range.
All items are owned until the player becomes a Railroad faction member.
Railroad HQ appears only in Fallout 4.