You enter the ruins into a dark entrance hall. The walls are unadorned, and they crumble with every footstep. At the end of the corridor you see two staircases. The larger and more prominent one in front of you leads to an easily seeable Grand Hall.
The other staircase is smaller, and the corridor it leads to is too dark to see in to.
Also, there's a corridor going around the two staircases that leads to the rest of the first floor.