spiral staircase
Corkscrew climbing structure
A spiral staircase winds upward in a continuous curve around a central axis, each step radiating outward like spokes.
The design saves space compared to conventional stairs and appears in lighthouses, medieval towers, and modern lofts: She climbed the narrow spiral staircase to the bell tower.
- winderCoiling device or person
- riserStair's vertical portion
- treadSurface that grips ground
- balustradeRail supported by posts
- stepFoot movement forward
landing · going up · newel post · lighthouse · helix · vertigo · corkscrew · turret · handrail · volute · ascending · tight squeeze · verticality · medieval towers · secret passage · railing · bannister · space-saving
- stairsstair, treads, steps, stairwell, handrails
- lighthouse partstower, fresnel lens, gallery, light beam, rotating light
- castle partsmoat, keep, drawbridge, battlement, tower
- spiralshelix, coil, whorl, swirl, vortex
- structureshouse, bridge, buildings, dome, building
- stepped structuressteps, stepladder, ladder, escalator, step stool
spiral, stairs, staircase, stairway, spirals, staircases, spiralled, spiralling, spiralize