Ha Long Bay is a UNESCO World Heritage Site, and a popular travel destination, in Quáng Ninh Province, Vietnam. Administratively, the bay belongs to Ha Long City, Cam Pha town, and part of Van Än District. The bay features thousands of limestone karsts and isles in various sizes and shapes. Ha Long Bay is a center of a larger zone which includes Bái Tá Long bay to the northeast, and Cát Bà islands to the southwest. These larger zones share similar geological, geographical, geomorphological, climate, and cultural characters.