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Southern Lookout viewing platform opens on Sydney's northern edge

architecture-design · 2026-05-07

The Southern Lookout, a newly inaugurated viewing platform, is located on Sydney's northern fringe. Crafted by AJC Architects, this 42-meter-long linear structure is perched on a steep incline, extending into the lush wilderness. It marks a significant step in making the former quarry accessible to the public, who can now explore the 60-hectare area due to ongoing landscape-led regeneration efforts. Embracing the quarry's raw and functional characteristics, the Southern Lookout features an industrial design with weathering steel. Its structure is described as 'simple and robust,' with a minimal footprint to safeguard the local ecosystem. The platform boasts an 18-meter span and a 6-meter cantilever reaching into the old quarry. Hornsby Park, the broader area, is being transformed by Hornsby Shire Council into a public space, with AJC Architects collaborating with Clouston Associates on this initiative.

Key facts

  • Southern Lookout viewing platform opened on northern edge of Sydney
  • Designed by local practice AJC Architects
  • Structure is 42m in length
  • Sits elevated on a steeply sloped site
  • First initiative opening up former quarry site to public
  • Visitors can now access 60-hectare space
  • Industrial aesthetic with weathering steel construction
  • Achieves 18m span and 6m cantilever
  • Part of Hornsby Park regeneration by Hornsby Shire Council
  • AJC Architects collaborated with Clouston Associates

Entities

Artists

  • Miwa Negoro
  • Alexander Mayes
  • AJC Architects

Institutions

  • AJC Architects
  • Hornsby Shire Council
  • Clouston Associates
  • Wallpaper*
  • Arup
  • Dunnings

Locations

  • Sydney
  • Australia
  • Hornsby Park
  • Southern Lookout
  • Hornsby
  • Hornsby Quarry

Sources