Siheung Oido Museum (시흥오이도박물관)

Siheung Oido Museum is a public institutional museum in Siheung, Gyeonggi-do, set near Oido Island as a museum dedicated to the area's distinctive prehistoric archaeology — Oido is one of Korea's most-cited shell-mound (paegchong) prehistoric archaeological sites, with significant Neolithic-period evidence. The museum walks visitors through the prehistoric archaeology of Oido and the broader West Sea coastal region, the Neolithic shell-mound culture that defined early Korean coastal life, and the cultural-historical context of the area. Excavated artifacts, scale-model archaeological displays, and interpretive panels anchor the museum. Best paired with Oido Island itself for the strongest contextual experience.