The threshold space between the Queen Street Mall and the entrance hall is single-height, approximately six metres wide and four-and-a-half metres deep. It has a patterned terrazzo floor, marble skirting, a large, classically styled cornice and a central ceiling rose with round light fitting. An alcove on one side features decorative plasterwork in a classical style around its border, as does the lintel forming the opening between it and the entrance hall. Recent features such as signage and television screens are not of cultural heritage significance.