In Las Palmas the carnival is celebrated in a lot of ways. Parades, costumes, parties, lots of drinking, shows, fireworks, burning sardines and a powder party. During the powder party (in honor of the original inhabitants of the island) everyone is dresses in all white and equipped with a few cans of powder.
The idea is that you walk through the shopping street Triana from the beginning to the end. There is a band playing music, and the people simply follow the band. It takes around three hours to move to the end and meanwhile you are in the middle of one huge partying mass inside an even bigger white cloud of powder. Very nice!