I started with a Patron suggestion: Chop Shop (thank you, whoever you are) and had fun coming up with other uses for the space.
First, a straight Automotive Garage, then the aforementioned Chop Shop, filled with parts from disassembled cars. I grunged it up for my usual Abandoned variation next.
I channeled Nic Cage and hotwired a bunch of pretty vehicles for the Cars! variation, then installed a bar, weightlifting equipment and classy banners for a Biker Clubhouse.
It seemed like a decent place to hide from zombie hordes, so I converted the place into a Fortress, complete with a cache of food and bunks for survivors.
Finally, inspired in part by The Fall of the House of Usher miniseries, I turned it into a (likely illegal) Rave scene.
I think for this map, seeing the outside of the structure might help so I screen-grabbed the un-rendered exterior:

The image shows the garage doors at back, the main warehouse glass roof, and the western section windows.



