No. 02 of 8 · Choose a Dream Treehouse Feature
Spiral staircase
Construction that bridges a large vertical distance with steps
- Type
- Subclass of: architectural element · horizontal structural element · structural support · footpath · Source · 2026-10-20
- Field
- Studied by: Scalalogy · Source · 2026-10-20
- Source
- https://commons.wikimedia.org/wiki/File:At_Victoria_and_Albert_Museum_2025_018.jpg
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