No neighborhood was hit worse in Katrina than New Orleans' Lower Ninth Ward and it's been one of the slowest areas to rebound. There's still an effort to attract new residents and businesses there.

At the Flooded House Museum and levee exhibit in Gentilly, the history of Hurricane Katrina is on full display.

It’s hard to know how many people made Houston their permanent home after the destruction in Louisiana, but they changed the culture in the Texas city.