Commonly known as “the cheese grater,” the Leadenhall Building is the pinnacle of London’s avant-garde architecture. Designed as a tapered tower with a steel exoskeleton, it’s the tallest skyscraper in the City of London and the most innovative. The teams behind the Leadenhall project had to radically rethink every aspect of the traditional building model. This program follows the monumental challenges that come with erecting this super skyscraper: it will be constructed off-site, delivered to location, and stacked and bolted together like a giant Lego set.

• Corey Johnson