The main religion in Viet Nam is the mix of Buddhism, Taoism and Confucianism. Most of people they worship their ancestor for whatever religion they are. In each family, they have a special place for their ancestor pictures that may be an altar or just a table at the poor family. Every day, people pray to their ancestors with the incense and praying for their health, their prosperity and happiness. In each family, there is a member that often is the first boy or first grandson who will take care for their ancestor’s worship. At their ancestor’s remember day, they often cook a big meal and invite their relatives to come for remembering. Actually they just gather for eating , drinking and talking as that is as a chance for them to meet each other every year. Some of them may offer just rice and some simple dishes, depend on their living. Buddhism “ Buddhism appears to have been introduced in Viet Nam towards the end of the second century by way of China, having been preceded by Confucianism and Taoism. Four hundred years later, when Viet Nam succeeded in freeing itself from Chinese domination, it progressed by leaps and bounds under the patronage of the ruling families. Since then, in spite of the antagonism of other rival religions, it continued to expand almost uninterruptedly both in extent as well as by conviction. During a particular epoch of history, from 968 to 1414 it was given the status of a State religion. Several emperors of the Ly and Tran dynasties even went so far as to practice what they preached: some as faithful followers, some as monks proper, having abdicated and chosen the monastic way of life. A curious fact, this, and it would indeed be interesting to study it without necessarily digressing from the subject of the present paper. Vietnamese Buddhism continues to hold this supremacy in our own times, not in public life it is true, but in the hearts of a good majority of the people. It is therefore easy to understand how great an influence the Dharma of Buddha has had on the Vietnamese mind, and the generous contribution it has made to the moral and spiritual training of a people whose gentleness and simple outlook on life predisposed them to accept the «Religion of Compassion.» . (Source: by Chanh Tri MAI THO TRUYEN- phathoc.com) One pillar Pagoda

To the right of the Ho Chi Minh Museum is the unique One-Pillar Pagoda (Chùa Một Cột), a wooden structure built in 1049 that sits on stilts over a lake. King Ly Thai Thong had it built after having a dream in which Bodhisattva Avalokitesvara, the goddess of mercy, presented him with a lotus flower. The existing pagoda is a miniature reproduction of the original, which was said to represent a lotus emerging from the water. It is certainly interesting, and a prayer here is said to bring fertility and good health.

Tran Quoc Pagoda:

Tran Quoc Pagoda is the oldest of all pagodas in Hanoi. It is located on a small peninsula on the eastern bank of Ho Tay, the West Lake of Hanoi. It is said that, the pagoda was built under the reign of King Ly Nam De (544-548) under its original name of Khai Quoc (National Founder) on the bank of the Red River. In the 17th century, Khai Quoc Pagoda was moved to its present side and was renamed Chua Tran Quoc. Historian learned all this from a stele found on the premises which dates back to 1639.

Thien Mu Pagoda:

Or Linh Mu Pagoda is located beside the romantic Huong River. Thien Mu Pagoda with its ancient architecture combined with the nature that creates many beautiful scenes at that quiet but solemn and warm atmosphere area. Thien Mu Pagoda is the soul of Hue City. Talking about Hue, people will talk about the Citadel, Trang Tien Bridge and Thien Mu Pagoda. Thien Mu Pagoda- Hue: “ Phuoc Duyen Tower is a famous symbolic link with Thien Mu Pagoda. It is 21 metres high, has seven storeys, is located in front of the pagoda and is visible from the Huong River. On each of the seven storeys there is a statue of Buddha. Inside the tower a spiral staircase leads to the top storey where formerly a gold Buddha statue was displayed. Huong Nguyen temple is in front of the Tower.

Giac Lam Pagoda:

Giac Lam is concerned as the oldest Pagoda in Saigon. It was built in 1744. This pagoda is famous as its values about history, culture, art of architecture, carving and with many antiques. Its feature in decoration is that 7500 ceramic plates were carved along two sides of the wall, on the roof, at the shrine... It is considered extremely rude and offensive to wear revealing clothing. Dress modestly and when visiting Temples and Pagodas wear shirts that cover shoulders and long pants are most appropriate. Wear shorts that are knee-length and keep your shirt on unless you're at the beach where you should never tan topless or in the nude. If unsure, just follow what the locals do.

Catholicism
Catholicism came to Vietnam from of European missionaries during the sixteenth century. According to The Royal Vietnamese Annals, in the year of Nguyên Hòa (1533), under the reign of King Lê Trang Tông, there was a decree that banned Christianity. The decree mentioned the name of a European individual, Ignatio, who by seaway had landed and preached the religion at Ninh Cường and Quỳnh Anh Villages, district Nam Chân (present Nam Định). The document did not mention his congregation, but probably Ignatio belonged to a religious order.

Based on the above decree, it is understandable to presume that the Gospel had been preached in Vietnam before the year of 1533. The missionaries have traveled all over the country. They came from different European countries via neighboring countries such as the Philippine Islands, Malacca, Macao, Japan... They were accompanied by European merchants and belonged to a variety of congregations: Society of Jesus (SJ), Dominican Fathers (OP), Order of the Minor Friars of St. Francis (Franciscans, OFM) and the Foreign Mission of Paris (MEP). (Source: tgpsaigon.net)

Phat Diem Church:

Phat Diem Church ( or Phat Diem stone Church) locates at Phat Diem Town, Kim Son District, Ninh Binh Province. About 120km from Ha Noi to the South. Phat Diem Church is known as the most beautiful Church in Viet Nam. Phat Diem Church was built at 1875 and completed at 1898. That is a Catholic Church but was built by the traditional Vietnamese Temples and Pagodas style.

Nha Trang Church:

The Church was constructed in between 1928 – 1933 on the small mountain named Bong mountain. It is right in the heart of Nha Trang city and have known with many popular names such as Nha Trang Church, Stone Church ( as it was built by stone), Nga Sau Church ( as it locates near the circulation circle) Since 1957, this church became the cathedral of Nha Trang.

Notre Dame Church:

Saigon Notre-Dame Basilica (Vietnamese: Vương cung thánh đường Đức Bà Sài Gòn or Nhà thờ Đức Bà Sài Gòn), officially Basilica of Our Lady of The Immaculate Conception (Vietnamese: Vương cung thánh đường Chính tòa Đức Mẹ Vô nhiễm Nguyên tội) is a cathedral located in the downtown of Ho Chi Minh City, Vietnam. Established by French colonists, the cathedral was constructed between 1863 and 1880. It has two bell towers, reaching a height of 58 meters (190 feet).

CAODAISM:

Caodaism is considered as a third largest religion in Viet Nam. The main official heard quarter is in Tay Ninh – about 100km from Saigon to the Southwest. “ Concerning the term Cao Đài, literally, Cao means "high" and Đài means "dais, as in a platform raised above the surrounding level to give prominence to the person on it." Figuratively, it means that highest spiritual place where God reigns. Caodaiists often use the term Đức Cao Đài (Venerable Cao Dai) as the abbreviated name for God, the creator of the universe, whose full title is Cao Đài Tiên Ông Đại Bồ Tát Ma-ha-tát (translation: Cao Dai [the] Ancient Sage [and] Great Bodhisattva Mahasattva). According to Caodaiists, the full title was purposefully chosen by God because within it are representations of the Three Teachings: Saint, Sage and Buddha. Caodaiists credit God as the religion's founder. They believe the teachings, symbolism and organization were communicated directly from God. Even the construction of the Tây Ninh Holy See is claimed to have had divine guidance. (Source: Wikipedia.)