Similar to Japan's Tsukiji Market. You can buy fresh seafood from the vendors downstairs, then take them to one of the restaurants on the second floor. They cook it the way you want (for a fee, of course). We tried sannakji, Korea's famous octopus sashimi. Not gonna lie, it tasted pretty good—once you get past all that squirming. Be ready to shell out some cash; getting enough for an entire meal here is gonna burn a hole in your pocket. There are also a bunch of shops where you can buy knives, dried seafood, Korean condiments, etc. Worth a trip.