Ajay Devgn and Kajol’s luxurious Mumbai home, ‘Shivshakti,’ features a spiral staircase, swimming pool, elegant dining area, ...

Carefully remodeled, the 2,271 square feet of main level and finished basement includes an upper-level loft built into the peak of the building frame, accessible by an unusual spiral staircase.

Dutch studio NEXT Architects has completed Watchtower Einderheide, a bat-friendly wooden lookout in the Netherlands with a curved cut-out that reveals a spiral staircase. NEXT Architects ...

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