Zaha Hadid’s design for the Beethoven Festspielhaus in Bonn Beethoven Festspielhaus proposal design by  Zaha Hadid Architects in Bonn, This UK architectural firm has submitted a design of sinuous translucence. Expanding like a mouth, the structure’s Rhine-side glazed facade reveals the grand staircase that leads concertgoers upwards to the main concert hall.The curvilinear shell opens and closes, creating an ongoing dialogue between interior and ...