Outside the box: Sou Fujimoto's Serpentine pavilion - in pictures

Sou Fujimoto stands inside his Serpentine pavilion Photograph: Ray Tang/Rex Features

Visitors are encouraged to enter and interact with the pavilion in different ways during its summer-long stint in London's Kensington Gardens Photograph: Ray Tang/Rex Features

Toddler Helmi, 18 months old, climbs all over the pavilion Photograph: Ray Tang/Rex Features

Fujimoto is the 13th and, at 41, the youngest architect to accept the invitation to design a temporary structure for the Serpentine Gallery Photograph: Ben Stansall/AFP/Getty Images

The cafe inside the pavilion – a latticed structure of 20mm steel poles Photograph: Peter Macdiarmid/Getty Images

Inside the Serpentine pavilion cafe Photograph: Christian Sinibaldi for the Guardian

Fujimoto gives a press conference in the pavilion cafe Photograph: Lefteris Pitarakis/AP

Visitors take pictures of the pavilion. The Serpentine Gallery's roof can be seen in the background Photograph: Ben Stansall/AFP/Getty Images

A journalist inside the pavilion Photograph: Lefteris Pitarakis/AP

The pavilion occupies 357 sq m of the lawn in front of the gallery Photograph: Peter Macdiarmid/Getty Images

A closeup detail of the Serpentine pavilion Photograph: Christian Sinibaldi for Guardian

A visitor clambers over the new pavilion Photograph: Christian Sinibaldi for the Guardian