Photo: Janek Skarzynski/AFP/Getty Images
A group of boys leap over water spraying out of a fire hose on June 20 in downtown Warsaw, Poland.
June 21 marks this year's summer solstice — the official start of nearly every child's favorite season.
Photo: Arif Ali/AFP/Getty Images
Mud-covered children dash across the shallows of the Ravi river on June 19 in Lahore, Pakistan.
Photo: Alexander Klein/AFP/Getty Images
A black and white dog jumps out of a fountain on June 18 in Vienna, Austria.
Photo: Rizwan Tabassum/AFP/Getty Images
Pakistani youth plunge into the blue-green waters of the Hub canal on June 19 in Karachi, Pakistan.
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