Louisiana is the only state in the union that doesn't have counties. Its political subdivisions are called parishes.
The Saint Charles streetcar line in New Orleans and the San Francisco cable care are the nation's only mobile national monuments.
Don Wildman: At 6 AM August 29th, 2005 Hurricane Katrina made landfall sixty three miles southeast of New Orleans. The devastation was deadly, Louisiana's coast and its biggest city was plunged into the Dark Ages. As global warming causes increased sea level rise many experts believe the worst is yet to come and New Orleans is desperate for answers. In a town where even the cemeteries are above ground, New Orleans underworld may be the key to its survival. From the broken levies to the mega engineering projects designed to save the sinking city, New Orleans was saved by heroes who acted bravely as their city was drowning. It's a battle to save New Orleans and the front lines are underground.