Norman Foster has designed some of the world’s most visually sumptuous buildings, from the Gherkin in London to the Reichstag in Berlin. Now 86, the pioneering architect shows no signs of slowing down
As the soaring 3,312-piece glass roof celebrates its 20th birthday, its creators recall the risks, setbacks, and unexpected discoveries – and that time Nelson Mandela paid a visit
Tulip, Summit, Mound: can urban properties really be ‘experiences’?