Dinh Mountain Historical AreaIn the early 19th century , this area consisted of primitive forests with rich flora and several kinds of precious wood. Due to its difficult and hazardous terrain, Dinh Mountain was a safe base for several political and military units during the French and American resistance wars.

Day Bi Cave
Day Bi Cave was the base where leading political and military units of Chau Duc district hid during wartime.

To Cave
Situated at 200m above sea level, To cave is linked to a deep network of grottoes. During the resistance period, the cave was used as a site for cadres and militants as well as a food warehouse.

Mai Cave
Mai Cave is a beautiful site situated at a height of 234m, over a large valley with two small streams running through it. By 1968 the base as well as many of the pagodas in the area, had been bombed and destroyed. At one point the enemy positioned  troops close to the opening of the cave and crashed it down.

Lung small valley
This small valley used to be a remote resistance base, hidden in an area where edible plants grew in abundance. Old trees of all kinds also grew on the slopes. Cadres and militants lived in underground shelters to ward off bombings. This was also the training base for the resistance forces of Ba Ria and Saigon's Youth league.

Dinh Co Palace
According to legend, Dinh Co palace was built in the late 18th century and dedicated to the virgin Le Thi Hong who died in the sea. Her body was carried by the waves and drifted ashore on Hang Island where she was buried by villagers on a hillok an the coast.

Because her spirit kept appearing to the local people to predict event and cure them of diseases, the villagers set up a shrine in her honour. At first the Dinh Co was only a small shrine located near the shore. By 1930 villagers had collected funds and constructed a larger palace. Today Dinh Co is a vast, splendid and solemn palace. The inside is decorated with statues of the four sacred animals.

Sixty steps lead to the entrance of Dinh Co grave, located 1km from the Palace on Co Son hill. Dinh Co festival is celebrated on the anniversary of the death of Le Thi Hong, from the 10th to the 12th of the lunar month. As a result of its beautiful natural landscapes of mountains, forest, sea and beach, along with its exceptional architecture and inner design, Dinh Co has been listed as a National Heritage Site.