Mass Bay Medical Center The Mass Bay Medical Center is a location in the Commonwealth in 2287 . Background . According to a holotape made by one of the nurses of the hospital , the Mass Bay medical center survived the initial nuclear attack that devastated the Greater Boston area . According to the same holotape , the medical center was then commandeered by the military and continued to treat patients for some time . The situation quickly deteriorated and the medical staff could do nothing but try to make the patients comfortable . Layout . The layout for Mass Bay is mostly vertical , except for the first floor which is broken into two sections and the second floor which spans multiple hospital departments . The first four floors are in a different interior cell to the remaining ones , so if you ' ve cleared all the enemies in the first four , you can make as much noise as you like without alerting enemies in the remaining floors . First floor . The main entrance opens into a 2 - story lobby ; the Sole Survivor will be facing east upon entering . To the south is a police protectron and the Expert terminal that controls it sits behind the nearby desk . East of the lobby are some broken elevators to the north and restrooms to the south . Further east are a kitchen and a fortified cafeteria with a cooking station and a Gunner who may be doing push - ups if one sneaks up on them . To the south of this area is another entrance into the medical center . Back to the lobby , to the north is a set of stairs leading to the second floor , but is blocked beyond that . The other part of the first floor consists of the emergency room entrances and lobby . The main emergency room entrance is to the west , and another entrance can be found across the room to the east . To the south is another broken elevator which houses a turret . Near the elevator is a staircase leading to the second floor . Second floor . Starting from the main entrance staircase , to the south is likely an Assaultron on patrol and also possibly a leveled Gunner who patrols the area . From this main area there are paths to the east , southeast and south . Heading south takes one to the emergency side of the hospital , including the staircase down to the first floor to the west and exam rooms to the east . Heading east one encounters another small lobby and multiple exam rooms , one of which has a chemistry station . Further to the east is a medic protectron controlled by a Novice terminal right next to it . There are two locked exam rooms - one is Expert - locked and contains a gruesome scene , the other is Novice - locked and has an addictol . Back to the main area , the eastern path closest to the staircase leads down a hallway which curves to the south . Around the corner lies another turret protecting yet another entrance into the medical center . This entrance is reached by taking the wooden stairs that circle the building on the outside . Main area - the southeastern path leads into a room with two cells , one of which contains a dead minuteman . Behind the nearby desk is a Novice terminal which can open the Novice locked safe just below . Continuing on leads one into a room where the third floor has collapsed , creating a path up . It also contains several curtained - beds which contain various things like a chemistry station and ammo . Third floor . Going up the collapsed floor path leads to some rooms - two lab - type rooms and a small office . Beyond this is another reception area with two broken elevators and the creepy baby in a carriage . The staircase that was blocked from the second floor is now clear and can be used to reach the fourth floor . Fourth floor . Yet another reception area . Here there are doors leading to a new area , Medical Center Station North , and a working elevator . Take the elevator to continue . Seventh floor . The elevator opens up to the seventh floor . The floor goes to the right of the elevator , or east , and opens up into a three - story atrium . Be prepared , there is a Gunner commander on the eighth floor directly east who will try to enter a suit of power armor just north of them if one is detected . There is also likely another Gunner on the ninth floor . Various collapsed floors create ramps leading to the next story in the building . Take seven to eight , then to nine . Eighth floor . There is one thing of interest on this floor - power armor . If you ' re lucky you can take the whole frame , which is a T - 45 missing the helmet . There also happen to be two power armor stations . Ninth floor . At the top of the ramp coming from the 8th floor is a bed . To the west on this floor are some more cells . One contains a dead Brotherhood of Steel scribe . To the east is a room with a collapsed ceiling heading up or a hallway leading further back . If one heads back , one will find an MRI machine and some offices , one of which contains a Novice safe . Once done with the area , the player character may take the collapsed ceiling to the tenth floor . Tenth floor . Not much of note on this floor , other than the elevator leading to the roof . Roof . On the roof is a small living area with various junk items and drugs , and a u - turn from the elevator leads to a MILA drop point . There is also a window cleaning elevator that leads to the Ticker Tape Lounge . One can also see the Vertibird that crashed into the building , which created a path to the other roof with nothing of interest . Appearances . The Mass Bay medical center only appears in " Fallout 4 " . Bugs . Sometimes , when one enters the elevator to the roof and presses the elevator button , the elevator will close but then run forever , seemingly passing unlimited floors without end .