Prize Winner

1 Bligh Street, Sydney

Architects: ingenhoven architects + Architectus
Christoph Ingenhoven, Düsseldorf; Ray Brown, Architectus, Sydney
Project architects: Martin Reuter (ingenhoven architects), Mark Curzon (Architectus)
Developer: DEXUS Property Group, DEXUS Wholesale Property Fund, Cbus Property
Purpose: office building
Height: 139 m
Completion: 2011
Location: Sydney, Australia

1 Bligh Street © photo: H. G. Esch

With its elliptical shape and its moderate height of 139 m, this office block is at a slight angle to the street grid, meaning that all the offices have a direct view of Sydney Harbor and the famous Harbor Bridge. From the public plaza at the foot of the building steps offering seating, and a café area, lead to the foyer. The façades of the foyer storey feature adjustable glass lamellas and folding glass elements that allow fresh air to stream through. The central atrium extends over the entire height of the building, 130 m, with the natural flow of air in the foyer being drawn up by the chimney effect and dispersed at roof level, guaranteeing permanent air exchange. The tower is fully glazed, both the interior walls of the atrium and the elevator, as well as the external, naturally ventilated double façades – a first for a highrise in Australia. This double façade allows for optimum levels of daylight, decreases the thermal load and heat loss, and accentuates the homogenous, crystalline overall appearance of the building.

From the jury's verdict: »With its moderate dimensions this building is outstanding in terms of its grandiose overall quality. It avoids the iconic in favor of a firm emphasis on user requirements and the view from the offices.«

1 Bligh Street, Atrium, © Foto: H. G. Esch
1 Bligh Street, Dachterrasse, © Foto: H. G. Esch
1 Bligh Street, Foyer, © Foto: H. G. Esch
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