Quang Ninh (Quảng Ninh) is a famous province for marine tourism. In addition to Ha Long (Hạ Long), Co To (Cô Tô), Tra Co (Trà Cổ), and Quan Lan (Quan Lạn), there is an island that has recently been exploited its tourism potential and invested infrastructure, attracting many visitors: Cai Chien Island (Đảo Cái Chiên).
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