The new WTO extension building for some 300 staff members offers a compelling view out over Lake Geneva with a sense of lightness and elegance. The idea was to create an extension that was a transparent as possible and did not seem at all solid in order to blend in best with the surrounding park; the proposal used a reduced formal vocabulary to create a long, glass cube on a set-back plinth boasting glazed frontage.
Nevertheless, the project set out to achieve high energy efficiency levels and obtain Swiss Minergie-P certification. Thanks to ingenious facilities technology, a heat recovery system and the use of Nimbus LED luminaires, this ambitious target was achieved even with the entire glass frontage chosen.
More at the link.