Southern Cross Tower, also known as 121 Exhibition Street, is a 161-metre (530 ft) skyscraper in Melbourne, Victoria, Australia.

[1] Before development of Southern Cross, the Victorian Government was concerned because its key departments were scattered among more than 15 office buildings throughout the Melbourne central business district.

A consortium of private bodies, including Multiplex and Babcock & Brown, suggested a skyscraper in the location of the old and derelict Southern Cross Hotel.

A key condition of the Victorian government's involvement in the project was its demand that the building be a state-of-the-art, environmentally sustainable development.

According to valuer Jones Lang Lasalle, the building's current market value is A$130 million and its major tenant is the Victorian State Government.[when?]