The Corpse

 The Corpse, known before the Great War as Corpus Christi Naval Base in Texas, was going to be a pivotal location in the canceled Fallout: Brotherhood of Steel 2.

Layout
The city itself is a huge wasteland, with just parts of buildings sticking out of the sand. The base is also submerged in water from the Gulf. Strangely enough, there is also a strange plant thing sticking up out of the water. 

Quests
The player has to visit the docks, where Jackal raiders wait for him. These are the cream of the crop, though. Full power armor and everything. After taking them out, the player finds a diving suit (think of the old metal 50s diving suit) and it's time to visit the base and see who's behind it all. Underwater, the player will fight mutated fish and other types of creatures to get to the base. Also if he gets closer, the plants themselves will turn hostile towards him.

Then it's inside the base. Pretty standard as the player must fight past robot sentries, and some Jackals as well. At one point, he must make his way back to a previous level, only to find Shale waiting with a group of super mutants. It's time to fight it out. As the player gets closer to the main boss area, more and more of the area will be taken up with plantlife. Pretty soon is he walking through a jungle very similar to the Lone Star vault.

Then on to fight Reese himself. The Cipher has vine things, and as the player watches, he manages to merge himself with the plant walls. It is his hatred of the Brotherhood that has led him here. And his hatred of you.

Then, in classic Fallout fashion, the player must overload the Super GECK and get the hell out of dodge before it all gets blown to hell.

Appearances
The Corpse was going to appear in the canceled Fallout: Brotherhood of Steel 2