Mardi Gras Mardi Gras in New Orleans is the biggest, craziest party in America. As a lifelong resident of New Orleans, I have seen firsthand how the Big Easy lets its hair down during the Carnival season. But as difficult as it may be for New Orleans residents to believe this, Mardi Gras is an even bigger festival in other locations around the world. So being born on Mardi Gras can be very significant in some places or carry no significance whatsoever.