Ha Long Bay
Ha Long Bay is a UNESCO World Heritage Site in Quang Ninh Province in northeastern Vietnam, about 170 km east of Hanoi. Covering about 1,553 sq km with nearly 2,000 limestone karsts and islets rising from emerald waters, it is renowned for its dramatic seascape, extensive cave systems, and biodiversity. Inscribed in 1994 for its outstanding natural beauty and geological value, it is Vietnam's most visited natural attraction.