The Ditherington Flax Mill, promoted as the Shrewsbury Flaxmill Maltings, is a flax mill in the county town of Shrewsbury in Shropshire, England. It is the world's first iron-framed building. It is also seen as the world's first skyscraper, often being described as ""the grandfather of skyscrapers"", despite it being only as tall as a modern-day five-storey building. In the 1950s, it became a Grade I listed building. The site is currently under restoration and is in the hands of Historic England with restricted public access.