Sinan Marine Archaeology Monuments, located in Jeungdo Island, came to existence after the discovery of the ancient artifacts. Over 28,000 items were found mostly near the region of Doduk-do Island, including treasures from Song and Won Dynasties. After the first discovery in 1975, more and various excavation results were reported, unearthening 600 years history, and gave a glimpse into Korea and China's remarkable development in intergovernmental, as well as trading cooperations in the past, awakening millions of historians in both nations.

The excavated artifacts are now housed for display at the Nation Museum of Korea in Seoul and National Maritime Museum located in Mokpo. In addition, the venue where this remarkable discovery was made and the monument that was erected, became the National Historical Site No. 274 so as to recognize the efforts and sacrifices that the divers had to make back then to preserve and unearth these world treasures.