Krewe of Gemini Mardi Gras Museum.

Things people know about Louisiana: 1) New Orleans 2) LSU 3) Saints 4) Mardi Gras
That's usually about it. New Orleans, football and Mardi Gras. Even though most people think about Mardi Gras in New Orleans, the holiday (usually associated with boobs and booze, which is kind of inaccurate. Mostly.) is celebrated in several parts of Louisiana. New Orleans gets the biggest turnouts for their parades, which is both good and bad depending on how you look at it, but Shreveport/Bossier puts on their fair share of parades every year as well. And while I've never been to New Orleans for the holiday, I can say, the parades in Shreveport are usually a blast. Plus, it was nice to get out of school for Mardi Gras break. One of the perks of being a Louisiana resident, I suppose.
One of the biggest and most well-known krewes in north Louisiana is the Krewe of Gemini. The krewe has a museum in Bossier City called the Krewe of Gemini Mardi Gras Museum, and while it's usually only open by appointment, it's definitely worth making the phone call to visit. The museum is full of costumes, beads, and posters from their decades of Mardi Gras parades. It's amazing to see how intricate each of the outfits are and see the progression of costumes and floats throughout the years.