About 63 m long, on three platforms. No height found; the drawing is estimated
Material
Bush-hammered in-situ concrete, precast piers 12.8 m high
Status
Recommended for the State Register in 2024; a final listing wasn’t confirmed. Northern Beaches Council offices
The shire council asked for this in 1970, and Madigan and Kringas set it on a rock outcrop planned as an acropolis above the Dee Why shops, with Bruce Mackenzie’s native bushland around it. Inside, three open floors are linked by concrete ramps, U-shaped in section, under a skylight, with the air-conditioning ducts left in view. Outside, the walls are hammered back to expose the aggregate. It opened in 1973 and served Warringah until 2016, when the council merged into a larger one. Heritage nominations have been deferred and renewed since 2008.