Fat Tuesday is a tradition in Christian religions where people enjoy large feasts prior to the 40-day fasting period of Lent. Fat Tuesday is also known as Mardi Gras. It is celebrated all around the world and even in countries outside of the US. Carnival is a large celebration that coincides with Mardi Gras and is traditionally rooted in Brazil. When it comes to the States though, there is no other place that does Mardi Gras as well as the South! New Orleans is the most well-known Mardi Gras destination