The courtyard forms a rectangular quad covered in neatly trimmed grass, cut through by two broad walkways that meet in the centre. A low circular plinth marks the crossing point, a convenient place to sit or dump bags between lessons. Atop the plinth lies the Celestial Sundial, a polished brass gnomon whose shadow is seemingly not tied to the sun at all, as day and night it warps across the yard and touches stone etchings that represent the hour, date, month, year, and lunar phase. A colonnade of stone columns provides shelter on the perimeter of the courtyard, where seasonal banners hang and flutter.