Few of the architectural principles developed in the 20th century have been as widely accepted as the curtain wall, with the technology going from an implied feature of Le Corbusier's Five Points of Architecture to the go-to facade treatment of architects worldwide. In this article, originally published on Australian Design Review as "Invisible Cities - The Last Remnant of Modernism," Annabel Koeck argues that the curtain wall, initially prized for its glassy transparency, is now making buildings and even entire cities invisible thanks to its sheer ubiquity - at the expense of architectural expression.
Norwegian architects Snøhetta, based between Oslo and New York, designed the glass structure for the The National September 11 Memorial entry pavilion, which appears camouflaged against the backdrop of neighbouring glass curtain walls that define the New York skyline. Admittedly, Snøhetta’s pavilion was conceived by a very different brief, one defined by timidity and subtlety; yet paradoxically it was the curtain wall that facilitated this. Looking over the South Pool towards an array of glazed elevations that dominate the skyline it is ironic that a Modernist technique – the curtain wall – could now spell the end for architectural diversity in cities.
