Sanya’s answer to low carbon future, a velodrome perched atop a glass cafe

The idea came to the architects after they had introduced the wide-brim pagoda roof to the design, the product of much research into vernacular typologies meant to accommodate and withstand the vagaries of the region’s tropical climate.

Apart from the elegant and friendly curves of its "optimistic" profile, the roof proved "surprisingly functional" as a velodrome. Supported on a field of columns which frame the curtain-wall structure below, the roof, though a diminutive version of a typical regulation-size velodrome, is capable of holding party to a score of cyclists at once. This top house protrudes over the edge of the glass wall, casting shade over the ground floor bike rental outlet and cafe, with sunlight falling through the central voids framing the twin staircases that provide access to the bowl above.