Understand the place through history, meaning, architecture and surviving evidence.
Ha Long Bay - Cat Ba Archipelago is a vast marine karst World Heritage property of 1,133 islands and islets across Quang Ninh and Hai Phong, celebrated for exceptional scenic beauty and globally important limestone geomorphology. The property combines classic fengcong and fenglin karst, sea-invaded towers, caves and grottoes with significant terrestrial and marine ecosystems. Cat Ba was incorporated through the major 2023 extension of the original Ha Long Bay property. VietnamWaving treats the entire UNESCO property as one World Heritage identity and one map marker. Ha Long Bay and Cat Ba remain discoverable through their own place and nature profiles without creating duplicate Heritage Map entries.
Key things to understand
- Ha Long Bay was first inscribed in 1994, modified in 2000, and significantly extended in 2023 to include the Cat Ba Archipelago.
- Thousands of limestone forms rise abruptly from the sea, producing a highly varied seascape of towers, islands, enclosed waters, cliffs, caves and grottoes.
- The property is internationally important for fengcong clusters and fenglin tower forms shaped by long karst evolution and later marine inundation.
- The enlarged property contains terrestrial, coastal and marine ecosystems and supports endemic and threatened species.
- UNESCO considers the key scenic and geomorphological features substantially intact, but the property has a long history of human use and intense tourism.
- UNESCO identifies visitor pressure, development, pollution risks, resource use and habitat disturbance among continuing management challenges.
- Ha Long Bay and Cat Ba have distinct tourism identities, but the UNESCO property connects them through the same marine-karst system.