Jang Bogo, the founder of this base, is historically recognized as the 'Maritime King' who eliminated piracy in the Yellow Sea during the 9th century.
The site was constructed using unique wooden fortifications; archaeologists found water-logged wooden piles preserved in the mud that date back 1,200 years.
Jang-do Island is physically separated from Wando's main island by a tidal flat, making the fortress naturally defensible due to the changing sea levels.
The site features a reconstructed wooden gate, based on historical architectural evidence found during excavation.
The location serves as the central hub for the annual Jang Bogo Festival, celebrating the merchant-warrior's contributions to maritime history.
Wando Cheonghaejin Historical Site is an archaeological complex located on Jang-do Island, marking the 9th-century maritime military base established by Jang Bogo. The site preserves the remains of a strategic fortress that once controlled East Asian maritime trade routes between Silla, Tang China, and Japan. Visitors access the site via a wooden bridge that connects the mainland to the island, which is only traversable during low tide or when the sea path is exposed. Excavations have uncovered circular remains of earthen ramparts, a signal tower, and residential building foundations. The site is a key location for understanding the 'Maritime Silk Road' and the administrative reach of the Unified Silla period. The museum exhibition displays recovered relics including Silla roof tiles and ceramics found within the fortress walls.
The wooden bridge approach during low tide, capturing both the fortress gates and the surrounding tidal flats.
Check the local tide tables before arriving, as the causeway leading to the island becomes submerged at high tide.
Wear comfortable, sturdy walking shoes, as the site involves traversing natural dirt paths and uneven terrain on the island.
Visit the onsite exhibition hall before walking to the island to provide historical context for the ruins you will see.
Attempting to cross the causeway during rapidly incoming tides; do not pick up or remove any stone fragments or artifacts from the grounds.
The tidal bridge access is restricted during extreme high tides; the park is generally open year-round but may close during severe weather alerts.
Maintain silence near the archaeological excavation pits and residential foundations; do not climb on the stone wall remnants.
