the west, and First Fleet Park to the south, Circular Quay on the north and east (pedestrians only on that side, abutting the water). Immediately beyond it, the Cahill Expressway separates the park and The Rocks from Sydney's central business district (CBD). Two of the city's landmarks are nearby—the Sydney Opera House is visible a short distance across the harbour and the Cahill turns onto the Sydney Harbour Bridge to the north. Just beyond the expressway to the south are some of Sydney's skyscrapers such as 1 Macquarie Place and the Salesforce Tower A broad lawn separates the museum from the quay to its east. To the west and northwest, the Rocks is urban and densely developed up to the bridge's southern approach, with attached two- and three-storey mixed-use buildings from the 19th and early 20th centuries. Nearby, cruise ships moor at the quay, and ferries serving the Sydney area arrive and depart from slips. Exterior Former Maritime Services Board building The former MSB building is a six-storey, 17-bay light orange-brown stone structure in the Stripped Classicism style with Art Deco ornamentation. A slightly projecting central clock tower is complemented by three-bay pavilions projecting two bays at the ends of both elevations. Atop the roof is a modern penthouse with glass facing and a flat roof with wide eaves. Two modern roofs, supported by circular metallic pillars, shelter the concrete deck in front of the ground-floor windows between the entrance and the pavilions. The one on the south side has tables and chairs serving the museum's restaurant. On the west (rear) elevation, the space between the pavilions is filled in with a block of modern shop spaces in an irregularly alternating black and white pattern on the upper storeys similar to that on the museum's newer Mordant Wing. On the exterior, the foundation level is one course of rusticated polished pink Rob Roy granite which also forms the surround of the main entrance on the east elevation and the auxiliary entrance on the south. The rest of the facade is smooth dressed orange sandstone, which also forms the surround of the tertiary entrance on the north pavilion of the west facade. Fenestration takes the form of triple-paned double windows separated by a continuous stone muntin in a continuous vertical recessed strip. On the south end of the building, the windows on the first two storeys are also continuous. The recessed