― Mardi Gras is an annual holiday celebrated in New Orleans, Louisiana and through out the neighboring counties and Gulf Coast. It starts on January 6 and ends on Mardi Gras Day otherwise known as Fat Tuesday. The tradition actually goes all the way back to the 17th and 18th centuries in Europe. From Rome and Venice it then went on to France, then was taken on to the French colonies. ∙ In the 1740's the governor of Louisiana, Marquis de Vaudreil presided over grand society balls for [...].