Colour block: Rogers Stirk Harbour + Partners completes International Towers in Sydney

Skyscrapers along the water
Rogers Stirk Harbour + Partners' International Towers look out over Sydney's harbour
(Image credit: TBC)

Rogers Stirk Harbour + Partners has completed the final tower of the International Towers in Sydney, marking the culmination of the first major part of its masterplan for the Barangaroo South area which unites the CBD with the waterfront.

Looking out over Sydney's western harbour, the facades of the three International Towers are covered with colourful fins designed to deflect heat while allowing light to enter. While visually cohesive as a trio, each tower is unique, reacting to its orientation.

Side of building looking out onto bridge

23,000 office workers will be housed in approximately 300,000 sq m of modern office space across the three towers

(Image credit: TBC)

As well as a striking addition to Sydney’s iconic skyline, the project has been lauded for its environmentally conscious design, receiving a prestigious Six Star Green Star rating (an Australian sustainability guide). Features include solar panels, rainwater capture and recycling and blackwater treatment, as well as substantial bicycle storage in the basement.

Setting a precedent for future builds of this kind, the towers were designed to meet all the requirements of modern working, including dynamic spaces and holistic interior planning. Housing a range of businesses, office spaces in the International Towers can be adapted to suit every style of working through a flexible 2,500 sq m of floorplates.

Hand drawn sketch of layout

The concept sketch for the lobbies of the International Towers in Barangaroo

(Image credit: TBC)

The 23,000 office workers populating the towers will also have access to a range of areas with high ceilings and large vertical open spaces, as well as welcoming lobbies on the ground floor, with vast windows opening up the buildings to the street.

Part of RSHP’s aim for the masterplan at Barangaroo South, the largest urban renewal project in the city since the 2000 Olympics, was to create a new location for work and play in the city and to open up the area to the public through architecture.

Busy outdoor seating area

The ground floor site has been designed to encourage a public outdoor culture

(Image credit: TBC)

The towers are designed to interact with the natural thoroughfare of the streets, positioned in a radial formation to break up the city grid and invite people to navigate through the site, initiating an outdoor culture to contrast the CBD's tight surrounding network of streets and solid buildings.

Close up of towers

The towers make striking additions to Sydney's iconic skyline

(Image credit: TBC)

Coloured window shades on towers

The facades feature brightly coloured fins, which are visually appealing while also serving to prevent solar load and cool the towers

(Image credit: TBC)

Outdoor courtyard with seating & plants

The ground floor site connects the CBD to the waterfront area

(Image credit: TBC)

Close up of red window fins

Each facade is uniquely designed to react to its orientation

(Image credit: TBC)


For more information, visit the Rogers Stirk Harbour + Partners website

Harriet Thorpe is a writer, journalist and editor covering architecture, design and culture, with particular interest in sustainability, 20th-century architecture and community. After studying History of Art at the School of Oriental and African Studies (SOAS) and Journalism at City University in London, she developed her interest in architecture working at Wallpaper* magazine and today contributes to Wallpaper*, The World of Interiors and Icon magazine, amongst other titles. She is author of The Sustainable City (2022, Hoxton Mini Press), a book about sustainable architecture in London, and the Modern Cambridge Map (2023, Blue Crow Media), a map of 20th-century architecture in Cambridge, the city where she grew up.