Cua Ong temple is located in the Cua Ong quarter of Cam Pha, 50km from the centre of Halong city. It offers a magnificent view of Bai Tu Long bay.
 

The temple was built at the beginning of the 19^th century. It includes a lower temple, a middle temple and an upper temple. In the lower temple, people observe the mother-worship cult, while the upper temple is dedicate to the cult of Tran Quoc Tang.

The main temple was formerly used to worship Hoang Cau, a regional hero, but it was later changed to honour his 3^rd son, Tran Quoc Tuan, who was very brave in defending the border in the Cua Suot area.

This unique temple is dedicated to the memory of the whole family of Tran Quoc Tuan. It contains 34 statues and statuettes, meticulously carved with striking engravings.