This Week in Photos, Week of Feb. 17-23, 2012

Japanese children celebrate the Saidaiji Naked Festival, revelers partake in Brazil's Carnival and much more.

Japanese children wear loincloths as they splash about in freezing cold water during Saidaiji Naked Festival, at Saidaiji Temple on Feb. 18 in Okayama, Japan. The festival is one of Japan's more quirky ones.