This week BIG completed The Spiral supertall skyscraper in New York

This week on Dezeen, we reported that BIG completed its first supertall skyscraper, a 66-storey commercial high-rise wrapped with a series of stepped terraces.
Located along New York's High Line, The Spiral reaches 314 metres-high and its footprint reduces towards the top as the ascending terraces cut into the building.
Studio founder Bjarke Ingels described the building as combining "the classic ziggurat silhouette of the premodern skyscraper with the slender proportions and efficient layo