The stairs next to the fountain in the center of the plaza have no collision for the orb so we are able to walk under the map while wearing it.
Put the Orb on. Then walk to the fountain at the center of the plaza. Once at the fountain try to walk up or down the stairs surrounding it, you will clip through them. You will also clip through the fountain as well.
I would go up the stairs. I would hit a wall for the fountain
I went through the floor and under the map