A warehouse building to place all the machines in. It would be a seperate loadable area that was smaller on the outside like the size of the house and bigger on the inside to place machines with a loading bay outside fro couriers to drive and pick stuff up from. Inside you would get to decorate and have to place stuff like:
Loading bay — big roller doors where the trucks pull in
Receiving area — incoming materials get dropped off
Storage area — shelves, pallets, crates and bins
Production area — machines and workers
Dispatch area — finished goods waiting to leave
Staff entrance — little door separate from the trucks
So that we can make industry areas look proper instead of machines everywhere!