Jeongbang is one of only a handful of waterfalls in East Asia that fall directly into the ocean. The 23-metre drop over black basalt onto the rocks and sea below is dramatic, and the viewing platform at the base (reached by descending stairs from a park above) puts you close to the spray. It sits just east of Seogwipo city on the south coast.
The waterfall is at its most powerful after rainfall; in dry periods the flow reduces significantly. Combine it with nearby Cheonjiyeon Waterfall (also in Seogwipo) and the Olle Trail section between the two for a good coastal walking half-day. Entry fee is small.