You are looking at a door, turn left and take few steps in this door way and once you cross the opening on your right and arch way on left, turn left in the arch way and take immediate right, this is again a arched hall way, where their is an immediate door on your left and a arch way in front of you, turn left through the open door and you should  be standing outside, continue straight ahead towards the three arched ways staying in the middle away, when you reach the middle arch way you are done.