The Vault - Fallout Wiki

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The Vault - Fallout Wiki
The Vault - Fallout Wiki
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Fallout 3 locations project
This article is within the scope of the Fallout 3 locations project. This project is dedicated to standardizing Fallout 3 location articles. If you want to participate, please check the project page.
Observation deck
Observation Deck.jpg
Icon section.png
Part ofMothership Zeta
Connects toBiological Research
Engineering Core
Weapons Lab
QuestsThis Galaxy Ain't Big Enough...
Cell NameDLC05ExLab01
ref id00002fcf
Observation Deck map.png
Gametitle-FO3 MZ.png
Gametitle-FO3 MZ.png

The observation deck is a location on board Mothership Zeta.


The observation deck is a room with a large glass floor through which the player and any surviving companions witness the aliens firing their death ray towards Earth. Initially, it is accessed from the space walk. Later, the player can teleport to/from the observation deck and the engineering core.

Below the observation deck's glass floor, in the center of the room, which is facing Earth; you can see what appears to be the East Coast and Central America extending down below Florida and upwards north of Canada. Including this, you can make out the Great Lakes and Michigan.


  • This is one of many areas of the ship that will not be accessible after the player has completed the final quest.


Observation deck only appears in the Fallout 3 add-on Mothership Zeta.