Parades are often a central part of a community celebration, providing an exciting, moving spectacle that people can watch from the sidelines. A famous parade in Britain is called Trooping the Colour when royalty is driven around in a carriage to inspect the troops. In the U.S., we have parades for all sorts of holidays, including Thanksgiving, Columbus Day, St. Patrick's Day, and Memorial Day. We also have parades celebrating cultural events such as Chinese New Year and Mardi Gras. One city in the U.S. is known for its Mardi Gras (French for "Fat Tuesday") Festival. Do you know which one it is?