Children fall as they slide down on a float along a chute to cross a pool of water and foam during the “Letniy Gornoluzhnik” (Summer mountain puddle rider) festival at the Bobroviy Log Fun Park near the Siberian city of Krasnoyarsk, Russia, August 23, 2015. The annual competition marks the end of the summer season at the Siberian ski, rest and entertainment resort. (Photo by Ilya Naymushin/Reuters)

Visitors view ice sculptures at the 29th Harbin International Ice and Snow Festival on January 5, 2013. (Photo by Associated Press)

A woman react inside a cloud of paint powder during the holi one colour Festival held in the city of Cape Town, South Africa, Saturday, March 2, 2013. Thousands of people are taking part in the festival by throwing coloured paint powder at each other to express freedom and the colour of everyday life. (Photo by Schalk van Zuydam/AP Photo)

Alee Harrison, 13, wears the tv series “Doctor Who” on her legs as she works on a painting for Operation Blue Pride. (Photo by Greg Lovett/The Palm Beach Post)

A reveller gets ready to dance during a "pow-wow" celebrating the Indigenous Peoples Day Festival in Randalls Island, New York, October 11, 2015. The festival is held as a counter-celebration to Columbus Day and is to promote Native American culture and history. (Photo by Eduardo Munoz/Reuters)

Female pilot Anna climbs out the cockpit of Japanese electronics company Suidobashi Heavy Industry's newly unveiled robot “Kuratas” at the Wonder Festival in Chiba, suburban Tokyo on July 29, 2012. The “Kuratas” robot, which will go on sale with a price tag of one million USD, measures four meters in height, weighs four tons and has four wheeled legs that can either be controlled remotely through the 3G network or by a human seated within the cockpit. (Photo by Yoshikazu Tsuno/AFP Photo)

A christmas teddy bear is wheeled along on a trolley at the Steiff stuffed toy factory on November 23, 2012 in Giengen an der Brenz, Germany. Founded by seamstress Margarethe Steiff in 1880, Steiff has been making stuffed teddy bears since the early 20th century ever since her nephew Richard Steiff exhibited the first commercially produced teddy bear in Europe in 1903. Teddy bears are among the most popular children's toys and the company is hoping for a strong Christmas season. (Photo by Thomas Niedermueller)