Gallery unveils 'doughnut' pavilion
The Serpentine Gallery has unveiled the latest of its annual pavilions - and it resembles a giant misshapen doughnut.
The temporary structure, which also has an open side and a viewing gallery jutting out to one side - overlooking London's Hyde Park - has been created by Chilean architect Smilijan Radic.
The gallery has created a new extension every year since 2000, with a different designer given the task each time.
Radic's ring-like structure balances on a series of huge boulders.
It opens to the public on Thursday and will be on display until October 19.