Atrium                                                 -      N      - 
(-------------------------------------------------)     W <---(M)---> E
                                                        -      S      -

The area within the atrium has been left unencumbered, save for statues
commemorating local dignitaries and the four emperors, this is where daily
commerce is conducted and pedestrian traffic travels.  The roof overhead is
partially open to the sky, however unlike the other basins, the one here is
empty of rainwater, something must be blocking the channel of water.  The
peristyle aisle stretches north, and the atrium continues east and west. 
The West Arch of Diocletian is to your south.  
Some drops of blood are on the ground.
     The bloody, severed head of Lunabell is lying here.