Hạ Long is the capital city in Vietnam's northeastern Quảng Ninh Province. It lies on the shores of Ha Long Bay, a body of water famous for its limestone karst islands. Once driven by coal mining, the city of Hạ Long is now the center of one of the country's most popular tourist areas. It lies about 160 km (around 100 mi.) northeast of Vietnam's capital city, Hanoi. Seen from a bird's eye in this droen video, the city was formally created in 1993 when the adjacent cities of Hòn Gai and Bãi Cháy were merged.