Construction images reveal that the world's skinniest skyscraper, 111 West 57th by SHoP Architects, has gained supertall status.
Photos taken by Andrew Campbell Nelson show the residential tower as construction completes on its third setback ? one of a series designed by New York firm SHoP to gradually narrow the already svelte structure towards the top.

The milestone means that 111 West 57th has surpassed a height of 984 feet (300 metres) ? the requirement for a supertall design ? as reported by YIMBY.
Located on a plot that is just 43 feet (13 metres) wide, the tower is set to rise to 1,421 feet (433 metres) tall. This creates a height-to-width ratio of 24:1, making it the world's skinniest skyscraper.

The photos ? taken on 9 September 2018 ? show that work on the building's cladding has begun. Strips of the terracotta tiles that alternate with windows and curving golden frames are fitted to nearly halfway up the skyscraper's east and west facades. The north and south sides will be almost entirely glazed, for views of Central Park and the Manhattan skyline.
Decorative tiles missing from cladding
In two of Nelson's images, the clay-based tiles appear to be missing from the completed cladding, leading to reports that these had fallen off during construction.

But the pieces have been left off intentionally, according to one of the project's developers, JDS Development.
"The gaps are where mounting brackets for the monorail system will go, and after the ri...