Right now you are in front of a door. Turn to your right and go forward by crossing the round table on your left. Go forward towards the closed glass door. On your right there is a staircase, get down the stair case. At the bottom of the staircase there are two rooms choose the room which is towards the right and go forward. Take a right turn near those two steps and go outside the room. Go towards the end of the room, at this point you are facing a wall, here we have reached our destination.