Circular Staircases have the advantage of having a smaller footprint. Saving space can be important and they can be installed in small spaces.
A flight of winding stairs is very aesthetic. It is immediately recognisable and its curved shape gives it a slender appearance.
The architecture is based on a central post around which the steps are placed in rotation, a veritable propeller with curved handrails. The whole circular design is known as a "spiral staircase".