London-based Weston Williamson won first prize in an international competition to design the Brasilia Athletics Stadium, an innovative skeletal structure inspired by the wings of a bird in flight. The huge, feather-like formations that create the structure’s undulating roof canopy will be constructed from lightweight concrete and steel connections. This feather-like roof will be in a constant state of flux, as the individual sections respond to environmental fluctuations, such as wind and sunlight.

“The exterior form of the new athletics stadium reflects the utopian spirit of the Brasilia plan by incorporating a geometry that is ever-changing,” the studio said in a statement. “The stadium, therefore, has no fixed identity, but alters in relation to the condition of its surroundings.”

The circular stadium sits on a wood-clad plinth surrounded by pools of water and dense vegetation which allows for cooling and ventilation of the structure.

Should Weston Williamson’s 70,000-seat design vision be realized, the Brasilia Stadium would be home to the Rio 2016 Olympic Games. The architects at Weston Williamson will be awarded a $12,000 prize for conceiving the winning entry.