Cua Ong Temple is one of the famous Tran Dynasty vestiges of the north-east region. The temple has three areas: low, middle and high, facing the majestic Bai Tu Long Bay.

During the war the middle and low temples were both detroyed, but today the low temple has been restored. The Cua Ong temple is dedicated to Tran Quoc Tang, the third son of Tran Hung Dao, who defeated many enemies and brought peace to the region.
 

Hoang Can, a local general who fought bravely against invaders is also honoured here. Yearly the festival at the Cua Ong temple take place from the second day of the first lunar month
 until the end of the third month. Formerly. locals organized festivities on the second
day of the third lunar month.

There were lavish cult ceremonies and a procession carrying Tran Quoc Tang's funeral tablets from the temple to a shrine in the village of Tran Chan.

Legend has it that this was the place where Tang's ashes drifted after being dispersed on the river. The procession would then proceed back to the temple, symbolizing the inspection tour of the Emperor.