Nueseom Lighthouse Observatory

Nueseom Lighthouse Observatory is a coastal lighthouse-and-observatory destination on a small offshore island near Daebudo Island in Ansan, Gyeonggi-do. The site combines a working lighthouse with an observation deck that provides broad open-sea views back across the West Sea, and the broader coastal landscape. Access to Nueseom ("Silkworm Island") is via a tidal causeway that emerges twice daily during low tide, making timing the visit around the tide schedule essential. The combination of the dramatic tidal-road approach, the working lighthouse, and the broad coastal view has made Nueseom a popular destination on the broader Daebudo coastal itinerary. Best timed precisely to low-tide windows, paired with broader Daebudo Island itineraries.