Itís that time of the year when thousands will head to Nevadaís Black Rock Desert for the Burning Man Festival to create a makeshift city of 50,000 and openly express themselves through art and other means. Burning Man is an annual, weeklong event with big acts booked to play on massive stages. It is more of a city than a festival; a gathering where almost everything is created by its citizens, who are active participants. LaTisha Strickland, left, of Portland, Ore., shows her octopus hat to a friend as they visit the effigy of the man during the Burning Man 2011 "Rites of Passage" arts and music festival in the Black Rock desert of Nevada. The 50-foot-tall Trojan Horse burns during the Burning Man 2011 "Rites of Passage" arts and music festival in the Black Rock desert of Nevada. More than 50,000 people from all over the world have gathered at the sold-out festival, which is celebrating its 25th year. Crowds gather around the "Tympani Lambada" art installation created by the Flaming Lotus Girls group.