In Rio de Janeiro, more than 72,000 spectators jammed into the Sambodrome to watch the spectacle of samba school floats, dancers, and extravagant costumes during Carnival. Even more people -- millions of locals and visitors -- took part in the many "blocos," or street parties, dancing and drinking into the wee hours of the night. Collected here are images from Rio and Sao Paulo, Brazil, as Carnival 2013 comes to a close.