Join一 教育与家庭 upcoming events being held in Huyện Cô Tô. Huyện Cô Tô is a picturesque district in Vietnam's Quảng Ninh Province, comprising a series of idyllic islands in the Gulf of Tonkin, known for their stunning beaches, crystal-clear waters, and vibrant coral reefs, making it an ideal destination for nature enthusiasts and adventure-seekers looking to explore unspoiled landscapes and engage in activities such as swimming, snorkeling, and boat tours to admire the area's unique beauty.