authority that oversaw the construction of very large office complexes and other buildings in the 1970s that are amongst the most dramatic examples of the Brutalist style in Australia, buildings that displayed the bold sculptural and structural possibilities of concrete. These include John Andrew's Cameron Offices, Belconnen, 1970-76 (partly demolished), and his Callam Offices in Woden (1977–81), the Canberra School of Music by Daryl Jackson and Evan Walker (1970–76), the Edmund Barton Building by Harry Seidler (1970–74), and the High Court (1975-1980) and the National Gallery of Australia (1973-1982) both by Edwards Madigan Torzillo & Briggs. The Campbell Park Offices is the least known of this group due to its isolated location, and is one which is "more rugged and uncompromising". In 1975 it won the Concrete Institute of Australia's Principal Award for Excellence in Concrete. In 2002, along with many Defence properties, the Campbell Park Offices were sold and leased back from the private sector. Description The building is accessed from Northcott Drive, which passes the Australian Defence Force Academy and the Royal Military College, Duntroon to the south then on to the Russell Offices. It crosses Fairbairn Avenue that runs between the airport (formerly the Royal Australian Air Force Fairbairn base) and the Australian War Memorial. Northcott Drive runs along part of the uphill side of the building, and there is a drive on the down-hill side which leads to the extensive car parking areas. The building houses 2200 personnel in four long sections running generally north–south, numbered CP1-CP4 from the south end, and the vertical nodes where they join are lettered A-E. Access is by main security entrances at B and D Nodes. A commercial cafeteria and banking facilities are at Node C, Ground level. Personnel must exit the building to use these. Underground document storage and a gym is below part of the building. The building looks eastward across the Majura Valley and Canberra Airport and backs onto Mount Ainslie, with seven floors of varying width, staggered back to the west to blend with the profile of the hill, and shade most floors from the afternoon sun. The cross section is complex, with the office floors elevated above various service rooms, the cafeteria, entries and walkways, most floors being 13.3m wide, except levels 5 and 7 which are wider, creating 3 setbacks on the front, and four on the rear. All floors are accessed by central