This double curved glass roof has a saddle-shaped surface and consists of a grid of stainless steel pipes with quadrangular meshes. These meshes are stiffened by stainless steel rods in diagonal direction, thus forming triangular elements, the essential prerequisite for the favourable structural characteristic of a shell. This allowed the design of a thin, most transparent and delicate structure while fulfilling stringent safety requirements. The laminated glass panels with SentryGlas plus interlayer are point supported at the four corners.