Under the Sydney Opera House is another unique structure — a 'doughnut-shaped' double helix car park - ABC News
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Under the Sydney Opera House is another unique structure — the world's only double helix car park : r/sydney
![Helix-form Car Park in Newcastle City Centre, near to Newcastle Upon Tyne, Great Britain Stock Photo - Alamy Helix-form Car Park in Newcastle City Centre, near to Newcastle Upon Tyne, Great Britain Stock Photo - Alamy](https://c8.alamy.com/comp/GMW1W9/helix-form-car-park-in-newcastle-city-centre-near-to-newcastle-upon-GMW1W9.jpg)
Helix-form Car Park in Newcastle City Centre, near to Newcastle Upon Tyne, Great Britain Stock Photo - Alamy
![File:Helix-form Car Park in Newcastle City Centre - geograph.org.uk - 1942522.jpg - Wikimedia Commons File:Helix-form Car Park in Newcastle City Centre - geograph.org.uk - 1942522.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/4/41/Helix-form_Car_Park_in_Newcastle_City_Centre_-_geograph.org.uk_-_1942522.jpg/1280px-Helix-form_Car_Park_in_Newcastle_City_Centre_-_geograph.org.uk_-_1942522.jpg)
File:Helix-form Car Park in Newcastle City Centre - geograph.org.uk - 1942522.jpg - Wikimedia Commons
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