Described by Rem Koolhaas as an 'anti pavilion' and by structural engineer Cecil Balmond as a cosmic egg, the pavilion, which opens on Thursday, is designed to change shape with Britain's notoriously unpredictable weather.
The centrepiece is a translucent inflatable canopy (pictured) that will be illuminated at night.
A walled enclosure below the canopy functions both as a café and forum for daily televised and recorded public programmes including live talks and film screenings in the Time Out Park Nights at the Serpentine Gallery programme.
Rem Koolhaas said: 'These pavilions have evolved with various structural typologies and materials, provoking a debate on architecture.'
Each summer the Serpentine commissions an internationally acclaimed architect to design a temporary Pavilion for its lawn at Kensignton gardens. Previous designers have included
Zaha Hadid and Daniel Libeskind.