The Louisiana Museum is located on Jackson Square in downtown New Orleans. It has two permanent exhibits. On the first floor the story of Hurricanes that hit New Orleans, and in particular, Hurricane Katrina.
Second floor houses the history of Mardi Gras.
From the second floor you can look out over Jackson Square and observe all the street performers.
One of the cool parts of the museum is the video setup where you get the experience of riding the float and throwing beads to the spectators.