The long-awaited winning design for the "Southbank by Beulah" design competition has been revealed - The Green Spine - a collaborative effort between UN Studio and COX Architecture.

Set to become Australia’s tallest tower at 356.2m, the winner was announced following an exhaustive six-month global search, which involved six of the world’s best architectural firms; BIG, Coop Himmelb(l)au, MAD Architects, MVRDV, OMA and UN Studio.

All partnered with local firms to propose varying and dramatic designs. UN Studio and COX Architecture's scheme is now likely to head toward planning.

The Green Spine in the Southbank skyline. Image: UN Studio and COX

Beulah International purchased the 6,061 sqm BMW Southbank site in 2017, with a vision to create an exemplar mixed-use development that would include retail, hotel, residential, commercial, cultural and public spaces of international standard.

The six shortlisted designs were revealed at the Future Cities Symposium last month, and judged by seven highly regarded jury members including key figures from Australia’s architectural community and chaired by Victorian Government Architect Jill Garner.

To view each of the design entries in greater detail, please click through the links below to their respective articles on Urban.com.au: