Talchem California HQ
An abandoned compound, but might be frequented by Raiders and other, more deadly foes. It is an old factory/laboratory and watch out - it is a Full Loot Drop location! A good place for PvP. There is a working elevator that takes you from ground level to the 2nd floor, but you'll need some special key to get beyond the heavy doors.
"You found some keyhole, but you're not sure. Maybe it's for some special key?"
Location
Talchem California HQ is located in zone 32:1 (north east area), not far from Gecko, and is the most northerly point in the world.