I visited two locations of the Tidal Flats, up for inscription in 2020 (or maybe 2021, due to coronavirus): Suncheon Bay and the Gochang Tidal Flats.
Suncheon Bay This location is ideal and probably the best choice, when the tidal flats become a WHS. Suncheon Bay is close to Naganeupseong TWHS (worth a visit) and Seonamsa monastery WHS.
You need to visit the Suncheon Bay Ecological Park to be able to see the iconic view shown in Clyde’s and Kyle’s pictures. The ticket fee is high and you even pay for parking (very rare in Korea). The park itself is like an Ecological Disneyland. You walk on well-maintained wooden paths, there are restaurants, boat tours and a big museum. Walk to the observatory for the tidal flats where you can admire them from three different levels.
Gochang Tidal Flats The tidal flats are rather a very long beach with remarkable high and low tide. I visited in February, but it was clear that this is where the Koreans hit the beach in summer. I started at Dongho Beach and drove down the coast along a small road. The closest WHS is Gochang Dolmen Site. Other than that it’s off the route. I specifically chose to visit this component, because I wanted to see more of this nomination than just the obligatory Suncheon Bay. There are some restaurants, but it’s nowhere near how we exploit beaches in Europe. As it was high tide, the beach was normal sized. I saw some football goals and volleyball nets partially under water. An info sign might have explained the tidal flats, but I don’t speak Korean.
When visiting Suncheon Bay I was convinced that this deserves to be a WHS, but having in mind that the locations also include rather ordinary beaches like Gochang, I take the whole nomination with a grain of salt. My impression however might have been different, had I seen the tidal flights on low tide.