Seobok Exhibition Hall is a small museum near Jeongbang Waterfall, tied to the legend of Xu Fu, the Chinese envoy said to have sailed east in search of the elixir of life. Local tradition connects his journey with Seogwipo, whose name is sometimes explained as "the shore of the westward return."
The museum is modest, but it gives useful context to the cliff inscriptions and old stories around Jeongbang. It works best as a short add-on when you are already visiting the waterfall.