For many years, the shelter was the Hawthorne School for Exceptional Young Men, where young warlocks were taught to control their magic. At some point, The Cooperative took ownership of the place and converted it into a fallout shelter once they realized that World War III was going to implode. It is unknown what happened to the warlocks of the coven.
Outpost 3 has an exterior field, surrounded by walls and a gate, that possess dying flora. The environment of the fields is very cloudy and smoky, and what Ms. Venable calls the "Nuclear Winter". Security measures are implemented so that every time there's an intruder, an alarm goes off inside. To access the fields, humans have to use individual protective equipment. In the exterior, the building looks like a black maze that has a door to an elevator. That elevator descends into a hallway that leads to an oval room, where people get decontaminated.
The inside of the Outpost looks like a Victorian house that is illuminated by candles. It has two floors, connected by a spiral staircase, where the lower floor has a dining room and a fireplace room, and the upper floor has the dorms and suites. The music room is a round room, where the walls have shelves filled with books and couches. The suites have a queen-sized bed with an armoire with dress clothes for dinner.
As the Hawthorne School
As Outpost 3