Originally designed as a retreat house for the Capuchin order, Franziskus House sits on a forest slope just outside Dulliken, a village near Olten in the Swiss midlands. Based on Le Corbusier’s design for La Tourette monastery in France, the interlocking structure comprises over 80 bedrooms, various meeting rooms, a large kitchen, an auditorium and a chapel. The retreat exudes the charm of a brutalist Prussian reformatory. After several ill-fated reincarnations as a conference centre or international student campus, Franziskus House has been self-isolating from the outside world since 2013.