deployable urban furniture - Google Search
Elegant Contemporary Foyer by Mark English - This dramatic, two-story circular staircase is a compelling centerpiece that sweeps your eyes upward to the skylights and the blue skies above.
360 deg post tensioned stone spiral staircase - Stonemasonry Company
Le Louvre. Staircase. I.M. Pei, Paris, France.
Spiral Floating Stairs
Spiral staircase, Le Louvre, Paris
This white sculptural spiral staircase entices you upstairs in this home.
Black Iron Spiral Staircase Remodelista