The main construction of Southern Cross Station includes the unique and innovative domed tubular roof structure, comprised of spine trusses along the platforms and long span arches across multiple railway lines.
Dominating it all is a wild roller-coaster of a roof, enclosed in all directions by massive walls of sheet glass stretching an entire city block from Collins to Bourke streets, and an equivalent distance back towards Docklands.
The roof's multi-domed surface brings to mind a gigantic air-filled blanket come to rest on a forest of Y-shaped concrete-filled steel columns. From high above, looking down from surrounding towers, it resembles a massive Bedouin tent. And when size matters, this has to be one of the biggest roofs in the world; spreading across 37,000 square metres - that's just over nine old-fashioned acres - over the station platforms.
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