Suspended in a circle above Sydney’s streets, circlesix reimagines Level 6 of Australia Square Tower as a new venue for architecture, culture, and conversation. Created by fjcstudio, circlesix transforms this extraordinary floor, originally designed as an exhibition space by Harry Seidler and Pier Luigi Nervi, into a contemporary commons for Sydney’s creative community.

More than a gallery or forum, circlesix is a place for exchange and reflection. This open, loftly, circular space dissolves hierarchy and encourages dialogue and shared inquiry. It is a space that invites architects, designers, and thinkers to gather, to listen, and to explore the deeper questions that shape our built world.

The renewal of this space builds on Seidler’s original vision for Australia Square, a tower designed not only as an office building, but as a civic landmark for Sydney. Conceived in the 1960s with the great Italian engineer Pier Luigi Nervi, the building embodied the optimism of modernism: a belief in structure, clarity, and the artistic and social potential of architecture.

Level 6 was never intended to be ordinary office space. It was designed as an exhibition floor, a cultural platform suspended above the city. The circular plan and radial beams, so elegantly resolved by Seidler and Nervi, created a space both technically advanced and poetically free. Without corners or columns, it allowed art, movement, and gathering to unfold in the round, a choreography of people and ideas.

In reimagining this space, fjcstudio has sought to honour that spirit of openness and generosity. Circlesix once again becomes a place for shared culture, a vertical commons where the city’s architectural past meets its creative future.

Here, above Sydney’s streets, architecture returns to its social and imaginative purpose. Circlesix reminds us that buildings can be more than structures, they can be spaces of connection, reflection, and civic life.