Seven 'extreme action dancers' led and choreographed by Elizabeth Streb leapt from the Millennium Bridge at 7.30am on Sunday morning to launch a day-long programme of extraordinary spectacles at landmark locations around London.
Surprises: Streb is one of several high profile events being presented by the Mayor of London and London 2012 Festival as the city prepares to host the Olympic Games.
"I am thrilled that we've been able to bring Elizabeth Streb's incredible dancers to the capital," says Mayor of London Boris Johnson.
"In an unprecedented summer of supreme sporting competition and world-class cultural events, the awe inspiring jeopardy they will bring to our landmark buildings promises to be one of the most mind-blowing highlights of the year."
The second Surprises: Streb location was City Hall where dancers appeared on the roof of the building at 10am. It is 10 years to the day since the Greater London Authority moved into its headquarters on the More London Estate.