Peter Carroll was delighted to be part of final reviews Accademia di Architettura Mendrisio at the invitation of Shelley McNamara and Yvonne Farrell of Atelier Grafton, with Antón García Abríl as fellow critic. Extraordinary projects were presented – all centred around the work of naturalist Alexander von Humboldt and the theme of ‘Building with the Invisible’ – wind, temperature, humidity and gravity