If you find yourself in s. LA, then you may want to check out Port Fourchon. Its more a less a crap town, but there is a lot of fishing and oil field service things there, whihc might make for interesting photos. I've been meaning on going to Battleship Texas Monument here in Houston, which may prove useful to you as well. Galveston Island is also a possibility for coastline and old architecture. Its been about 6 years since I was there so I can't say exactly where to check out. Hope this helps.