Begin at the top of a spiral staircase with  rod ion railing. Head up to  hallway to the opposite side of the railing. From here make a left ans see a second set of stairs. Head up those stairs. This will lead to a narrow hallway. Head down the narrow hallway past the black picture frames into the open doorway in front of you. Once you reach the bottom of a small set of stairs, take a right into the pen doorway. Once in the open doorway, walk to the window at the end of the room and you've arrived.