1 Bligh office tower, designed by ingenhoven architects + architectus, was inaugurated by Australian Prime Minister Julia Gillard last week. The architects were commissioned to design this tower in the centre of Sydney, Australia in 2006 as the result of an international design competition by the client, the Dexus Property Group.

But the prominence and prestige of this 28-storey tower lies not only in its formidable size and design, but in its evident commitment to environmental sustainability. The $670 million building received the highest score in the Australian Green Star standard, a 6 Star/World Leadership certification, and is hence the first office tower in Sydney to get this rating by the Green Building Council of Australia (GBCA).