From your starting position, you will see a doorway on the left, one in front of you and water fountain on the right. You will enter a hall, you will see the main door with the benches. Go towards the two arm seats on the right - well in the direction of those arm seats. I think they are red. Anyway, you tun right you see these open doors going outside. Follow that path, once you're by the glass - two open glass doors - take one step outside on the stoned surface. You're done.