This late-19th-century city-owned seafood market, which was by and large abandoned after Hurricane Katrina, was reborn as an upscale food hall several years ago. The dilapidated structure was spruced up and the navelike interior painted an austere, modern white. Then a dozen or so food vendors moved in, serving as a sort of incubator for those with an idea but no desire to go the food-truck route. It’s a great place to swing by for lunch or a casual dinner—you can get craft cocktails and spend some time at the oyster bar, then browse the other offerings, which include crab mac and cheese at Fritai and alligator-sausage hash at Elysian Seafood.