Carnal Hall at Le Rosey

How to combine a state of the art philharmonic hall with a major sustainability goal Under a reflective, low metal dome, this 900-seat concert hall is entirely made of recycled OSB compressed wood, together with natural mechanical ventilation (no AC!). Located by Lake Geneva in the provincial town of Rolle, the renowned Swiss international boarding school known as Le Rosey is one of Europe's most esteemed educational institutions. The new Le Rosey Concert Hall intends to infuse the campus with a contemporary architectural image. Despite a tight budget, the objectives for the concert hall were ambitious: to provide a world-class auditorium that is equally capable of responding to the most stringent sustainability requirements and welcoming the most prestigious orchestras in the world. The program for a new performing arts facility included a 900-seat concert hall, black-box theater, conference rooms, rehearsal and practice spaces, a library and learning center, a restaurant, café, student lounge, and various other amenities. Architectural and acoustic considerations were inextricably linked at every phase of design in order to create an enveloping sound for the audience. The proportions and shallow rake of the 'shoe box' concert hall create reflections from the sides and back of the hall generating an intimate sound in all seats. The hall is also adaptable for film projection, lectures and amplified music. Similarly, exceptional measures were taken to ensure the building met sustainability goals. Passive air ventilation systems were utilized throughout the building: natural air is channeled from the outside to ventilate the concert hall, and vertical facades ensure that each room has operable windows. A modest, locally-sourced, non-toxic OSB is used for wood finishes for the concert hall in order to meet acoustic, economic and ecological requirements.