The Culture and Congress Centre in Lucerne Switzerland (or KKL for Kultur- und Kongresszentrum Luzern) is a multi-functional building with a concert hall that is esteemed for its high-profile acoustics. It was built according to the plans of the architect Jean Nouvel and was inaugurated in 1998 with a concert by the Berlin Philharmonic Orchestra under the direction of Claudio Abbado.

 

interesting facts about the roof structure:

surface 12’000 square metres (2.9 acres)

weight: 2’400 tons

underside surface:  7000 square metres

materials: steel beams with wood supports, top: copper, underside: aluminum panels

longest roof overhand (north-east corner): 45 metres

withholding elements: up to 160km/h (99mph) winds and heavy snow weights

Source kkl-luzern.ch