Here is an ideal staircase with double function designed by B PIÙ s.r.l. for small lofts. Thanks to the vertical adjustment ...

Try not to get dizzy: Spiral staircases aren’t just for Victorian libraries anymore. One-of-a-kind twisting staircases in stone, wood and plaster have become sculptural statement pieces in New York ...

Italian studio Disguincio & Co has produced a concept for a spiral staircase with steps made from folds of fibreglass. The Folio Staircase by Pordenone-based practice Disguincio & Co would comprise a ...

This half-scale model of a spiral staircase by American studio Matter Design is made from concrete treads that slip neatly over each other. Above and top: photograph by Brandon Clifford The Helix ...

This unconventional structural system was inspired by the material in question: as unreinforced concrete has poor tensile strength, it is unsuitable for use in a cantilevered system as used in many ...