The Maine Avenue Fish Market in Washington, D.C., is the oldest continuously operating open-air seafood market in the U.S., dating back to 1805—even older than Fulton Fish Market in New York. Perched on the Southwest waterfront, it’s a salty, no-frills stretch of barges slinging fresh blue crabs, oysters, shrimp, and fish straight over the counter. Locals, tourists, and old-timers all crowd the docks for steamed seafood by the pound, shouted prices, and buckets of Old Bay. It’s loud, gritty, and