The grand foyer is an impressive single volume with richly ornamented walls and ceiling; predominantly Spanish Gothic with Baroque effects, such as the use of Rococo plasterwork and large mirrored surfaces. It is approximately long, wide and three-and-a-half storeys high. The doors leading from the entrance hall open into the western corner of the space. To the left stands a recent ticket and snacks counter which, along with various signage, is not considered to be of cultural heritage significance. Centrally placed along the south-eastern wall, and leading up to a mezzanine level, is the grand marble staircase. On either side of it, at ground level, are double doors that lead into spaces outside of the heritage boundary.