You begin looking towards an open door. Door number 357. Turn all the way to the right until you are looking out the door and step out towards the open door on the left. Once you're out in the hallway facing that open door to the left, turn to your right and proceed down the hall. You wanna keep going quite a ways, until the intersection-... Well, it's not really an intersection, actually, there's just a circular part of a pillar sticking out of the left hand side of the wall, and an open door on the right. Right past door number 352. So, enter that door just past 352 and the pillar, and then step towards the far side of that room from where you entered. Once you are towards that left corner, kind of lined up with that other open door, that itself is next to a large pillar, you're done.