You'll start out facing a large open room. On your left, you will see the top of a stairway leading down. Walk over to that stairway and then go down toward the black island at the bottom with the bar stools next to it. Then turn to your right. You will see a large, arched stone doorway with a world map on the wall in that room. Walk through that doorway and into that room on the left side. Then turn around and behind you, you will see two sets of stairs. Walk toward the set of stairs on your left, aiming for the last stair closest to the top of that and then when you are standing on that staircase facing the room where you started, that is where you will stop.