The site is in a valley on Hong Kong Island. It is surrounded on three sides by steep hillsides topped by high-rise buildings including apartment buildings. The site is open only to the north, in that direction there are views of the city and the harbor. The proposal was to create 40000 spectator seats, 75%of them covered with a roof, so as to create a stadium befitting the 21st century and capable of being used for diverse uses including sports and concerts. During the day, the diffused light brightens the spectator seats below, and at night the roof surface becomes radiant, suggesting a luminous seashell. The field is open, making it possible to grow natural grass. In this natural topography, the geometrical form and structure of the roof prove quite powerful.
  The stadium is squeezed into a small valley with steeply rising ground to the east and west. Two large stands of seating rise up closely following the shape of the valley sides. To obtain the required coverage of seats, the roof has to be up to 55m wide. A cantilever type roof structure of this span would have resulted in a very heavy structure for the stand and its foundation. Therefore a solution was developed using a 240m span arch to support the front edge of each roof. This proved to be a more economic solution given the constraints of the site. For architectural reasons the arches are inclined away from each other by 12, and are in the form of 3.5m square trussed rising to 55m at their crown.
  Curved secondary trusses have a triangular cross-section 3.5m deep, spanning 40-55mm between the front arch and the rear of the concrete stand. Catwalks, public address and floodlighting are supported from the framework. Wind tunnel tests were carried out to study the effects of the surrounding area and to establish pressures for the membrane design.
  For each roof the PTEE coated glass fiber membrane material was fabricated into 5 large panels of approx. This kind of material was selected for the membrane-structure roof because of its balance between heat and rate of translucency, its capacity to clean itself, its incombustibility and its durability.1600m² covering 3 bays of trusses. Similar to the San Nicola Stadium roof, the panels are held down buy clamp plates along all 4sides but not mechanically fixed to the tops of the trusses is an 80mm diameter valley cable stressed against the warped shape of the membrane panel which is itself prestressed to 510kgf/m in both direction.
  Effort was made in design to take the surrounding valley into account, and to create a compact layout that might blend in with the topography and environment. The simple yet expressive structure, integrated with the environment, has been highly praised, and the work won the 1995 American institute of Architects award.