The cellar door.

Even Though it's unlikely that they would keep a suit in the basement, Micheal decides to take his chances. Opening the door leads to a dark room, luckily, he see a light switch near the entrance.

As he is walking down the strangely long stairs, he hears the door close, at first he fears that he has been locked in by something so he hurries back up the stairs and pushes the door open, "it was just the wind" he says with a sigh of relief. As he turns on the lights he sees that the basement is one giant room, and in the room is something he thought he wouldn't see in his entire life.