Mark Trotter and Luke Thompson of New Zealand compete in the Senior Prearranged Sparring on the final day of the 2011 ITF Taekwon-Do World Championships at TSB Bank Arena on March 13, 2011 in Wellington, New Zealand.

A sculpture of a swimming man is displayed on the banks of the Thames on September 18, 2007 in London. The new artwork, unveiled today, is to promote a new television programme set in a tattoo parlour. (Photo by Peter Macdiarmid/Getty Images)

Fan Bingbing attends the new High Jewellery Collection “Sortilege de Cartier” launch dinner at Villa Aurelia on September 17, 2011 in Rome, Italy. (Photo by Pascal Le Segretain/Getty Images for Cartier)

Dancers rehearse for the Rockettes 2015 Radio City Christmas Spectacular in New York October 15, 2015. (Photo by Lucas Jackson/Reuters)

Central Park Zoo, New York, 1967. (Photo by Garry Winogrand)

People are reflected on a soap bubble lying on a road during the evening in New Delhi, India, June 23, 2015. (Photo by Anindito Mukherjee/Reuters)

A window cleaner passes a lighter to his colleague while rappelling from a new building in Tianjin March 23, 2007. (Photo by Reuters/Stringer)

A dancer poses for a photograph as part of the “Dance as Art” photo project in Times Square in New York, on September 22, 2014. (Photo by Carlo Allegri/Reuters)