Onrust Island

Onrust Island (Pulau Onrust) is a small historic island in the Thousand Islands archipelago, Jakarta, located in Jakarta Bay. Formerly a Dutch East India Company (VOC) shipyard and dockyard since 1619, it later served as a quarantine and hajj pilgrim transit site. Now designated as an Archaeological Park and cultural heritage site, it is notable for its preserved ruins, colonial cemetery, and Onrust Museum.

Visitors arrive by boat at a pier and explore a flat, open island with scattered ruins of Dutch colonial buildings, fort foundations, old barracks, and a historic cemetery. The central Onrust Museum displays artifacts and history of the island. Paths connect restored structures, information boards, gazebos and shaded areas. The environment is quiet and park-like with coastal views, suitable for walking, photography and guided historical tours.

Established in 1619 as a VOC shipyard and maintenance base for Dutch ships, Onrust Island was a strategic maritime dockyard in the 17th-18th centuries. It was destroyed and rebuilt several times, later used as a fortified base, quarantine station, and hajj pilgrim quarantine and transit camp in the early 20th century. Remains of docks, warehouses, barracks and fortifications reflect its colonial maritime history and it is now protected as a cultural heritage archaeological park.

Onrust Island is designated as a cultural heritage site and archaeological park by Jakarta authorities, representing Dutch colonial maritime heritage and the history of hajj pilgrimage transit in Indonesia. The island's museum and preserved ruins serve as an educational site for colonial history and local heritage conservation.