Eight trends that have defined the past 20 years of skyscraper design

From glass facades to vertical farms, we take a look at some of the trends that have influenced the past two decades of skyscraper design as part of our 9/11 anniversary series.
The race to the sky
Since the attack on the Twin Towers on 11 September 2001, there has been an acceleration of high-rise construction around the world. Architects are now able to reach record heights due to advances in structural engineering and more sophisticated lightweight elevator infrastructure.
In 2019, this saw a