Vietnam's Dragon Descent — 1,600 Limestone Karst Islands, UNESCO World Heritage, and the Most Iconic Seascape in Southeast Asia
Hạ Long Bay is a UNESCO World Heritage Site in the Gulf of Tonkin comprising 1,600 limestone islands and islets rising from emerald water — a karst seascape formed over 500 million years of geological erosion that has no equivalent in scale anywhere on earth. The name means 'Bay of the Descending Dragon,' from a Vietnamese legend that a family of dragons descended here and spat gems that became the islands as protection against invaders. Overnight cruises aboard wooden junks are the standard way to experience the bay — anchoring in isolated coves, kayaking through sea caves, climbing to islan…
Hạ Long Bay's landscape has been inhabited for at least 18,000 years — the Soi Nhụ culture and later the Cái Bèo culture left middens, tools, and burial sites on the islands. The bay was a strategic military theatre: Ngô Quyền defeated the Southern Han fleet here in 938 AD by driving iron-tipped wooden stakes into the river bed at low tide and luring the Chinese ships over them — the Battle of Bạch Đằng River established Vietnamese independence after 1,000 years of Chinese domination. The same tactic was used twice more, against Mongol invasions in 1285 and 1288. The French colonial administr…