A float is a decorated platform, either built on a vehicle like a truck or towed behind one, which is a component of many festive parades, such as those of Carnival in Rio de Janeiro, the Carnival in São Paulo, the Carnival of Viareggio, the Maltese Carnival, the Macy's Thanksgiving Day Parade, the Key West Fantasy Fest parade, the Mardi Gras in New Orleans, the 500 Festival Parade in Indianapolis, the United States Presidential Inaugural Parade, and the Tournament of Roses Parade. For the latter event, floats are decorated entirely in flowers or other plant material.