Oido Fishing Village is a hands-on mudflat stop on the coast southwest of central Incheon. At low tide visitors can dig for clams, walk the tidal flats, and then eat grilled clams or bowls of kalguksu in the seafood places nearby.
It is more of a half-day coastal outing than a headline sight, but it gives a good taste of the Yellow Sea mudflat landscape without going far from the city.