Vietnam (Vietnamese: Việt Nam), officially the Socialist Republic of Vietnam is a nation in Southeast Asia. It borders the People's Republic of China to the north, Laos to the northwest and Cambodia to the southwest. To the country's east lies the South China Sea. With a population of approximately 85 million, Vietnam is one of the most densely populated nations in Southeast Asia.Vietnam extends approximately 331,688 square km (128,066 sq mi) in area. The area of the country running along its international boundaries is 4,639 km (2,883 mi). The topography consists of hills and densely forested mountains, with level land covering no more than 20%. Mountains account for 40% of the area, with smaller hills accounting for 40% and tropical forests 42%. The northern part of the country consists mostly of highlands and the Red River Delta. Phan Xi Păng, located in Lào Cai province, is the highest mountain in Vietnam at 3,143 m (10,312 ft). The south is divided into coastal lowlands, Annamite Chain peaks, extensive forests, and poor soil. Comprising 5 relatively flat plateaus of basalt soil, the highlands account for 16% of the country's arable land and 22% of its total forested land.
Ha Long Bay, Vietnam's world natural heritageThe delta of the Red River (also known as the Sông Hồng), a flat, triangular region of 3,000 square kilometers, is smaller but more intensely developed and more densely populated than the Mekong River Delta. Once an inlet of the Gulf of Tonkin, it has been filled in by the enormous alluvial deposits of the rivers over a period of millennia, and it advances one hundred meters into the Gulf annually. The Mekong delta, covering about 40,000 square kilometers, is a low-level plain not more than three meters above sea level at any point and criss-crossed by a maze of canals and rivers. So much sediment is carried by the Mekong's various branches and tributaries that the delta advances sixty to eighty meters into the sea every year.
Vietnam has a tropical monsoon climate, with humidity averaging 84 % throughout the year. However, because of differences in latitude and the marked variety of topographical relief, the climate tends to vary considerably from place to place. During the winter or dry season, extending roughly from November to April, the monsoon winds usually blow from the northeast along the China coast and across the Gulf of Tonkin, picking up considerable moisture; consequently the winter season in most parts of the country is dry only by comparison with the rainy or summer season. The average annual temperature is generally higher in the plains than in the mountains and plateaus.

Vietnam's coastline is 3,260km long. If you have a chance to travel along the coast of Vietnam, you will be able to enjoy the beautiful beaches of Tra Co, Sam Son, Lang Co, Non Nuoc, Nha Trang, Vung Tau, and Ha Tien. In some places, you will see mountains jutting out to the sea. One such magnificent site is Halong Bay, which has recently been listed as a World Heritage Site by UNESCO.
Vietnam's coast has been awarded a series of large seaports, such as the ones at Haiphong, Danang, Qui Nhon, Cam Ranh, Vung Tau, and Saigon. There are thousands of islands and islets scattered offshore from north to south. Among the most popular tourist destinations are the Truong Sa and Hoang Sa Archipelagos

CultureCulture:

It can be said that there were three layers of culture overlapping each other during the history of Vietnam:
Local culture,
The culture that mixed with those of China and other countries in the region, and
The culture that interacted with Western culture.
The most prominent feature of the Vietnamese culture is that it was not assimilated by foreign cultures thanks to the strong local cultural foundations. On the contrary, it was able to utilize and localize those from abroad to enrich the national culture.
The Vietnamese national culture emerged from a concrete living environment: a tropical country with many rivers and the confluence of great cultures. The natural conditions (temperature, humidity, monsoon, water -flows, water-rice agriculture ...) exert a remarkable impact on the material and spiritual life of the nation, the characteristics and psychology of the Vietnam-
ese. The Vietnamese nation was formed early in the history and often had to carry out wars of resistance against foreign invaders, which created a prominent cultural feature: a patriotism that infiltrated and encompassed every aspect of life.
Cuisine:
Main article: Cuisine of Vietnam
Vietnamese cuisine is based on rice, various types of vegetables, seafoods and fish sauce. Its characteristic flavor is sweet (sugar), spicy (Serrano peppers), and flavored by a variety of mints.
Vietnam also has a variety of noodles. Different regions invented different types of noodles, varying in shapes, tastes, colours, etc. One of the nation's most famous type of noodles is phở (pronounced phuh), which consists of rice noodles and beef soup (sometimes chicken soup). This cuisine originated from North Vietnam.
Vietnam's middle region is also famous with many delicious cuisines which possess very distinct tastes.

Clothing:
Vietnamese clothing is very diverse. Every ethnic group in Vietnam has its own style of clothing. Festivals are the occasion for all to wear their favorite clothes.
Among the ethnic Vietnamese majority, there are several traditional costumes. A few include:
The Ao Tu Than (Áo Tứ Thân) or "Four-flapped dress" worn by northern women. It is a predecessor to the Áo Dài and is a four part flowing tunic, worn with a long skirt and an Ao Yem (Áo Yếm) underneath. Áo Yếm is the Vietnamese adaptation of the ancient Chinese Dudou.
Northern peasants also traditionally wore silk shirts and trousers. This pajama-like costume is called Ao Ba Ba (Áo Ba Ba). In contrast, in the South some peasants tend to wear all black Ao Ba Ba. For festive occasions some Vietnamese will wear this costume with a Mandarin collar.
The headgear of peasants is a plain piece of cloth wrapped around the head (generally called Khan Dong) and their footwear is just a pair of sandals.
The most popular and recognized Vietnamese national costume is the Áo Dài, which is nowadays usually worn mostly by women. Men do wear Áo Dài on special occasions such as weddings, funerals, etc. Ao Dai is similar to the Chinese Cheongsam (Qipao), consisting of a long gown with a slit on both sides, worn over silk pants. It is elegant in style and comfortable to wear.
This national dress is made compulsory in many senior high schools in Vietnam, and some colleges. Some female office workers (e.g. receptionists, secretaries, tour guides) are also required to wear Ao Dai. Owing to its popularity, the dress has become a national symbol, representing cultural values of Vietnam.
In feudal times, there were strict dress codes. Ordinary people were not allowed to wear clothes with dyes other than black, brown or white. Monarchs had the exclusive right to wear the colour gold, nobles wore red or purple.
There are also strict rules concerning the diverse types of clothing worn by royalty and aristocracy, which could change dynasty by dynasty.
In daily life, the traditional Vietnamese styles are now replaced by Western styles. Traditional clothing or costume is worn instead on special occasions, with the exception of the Ao Dai for females.

Religion:
The principal religion in Vietnam is the so-called Tam Giáo ("triple religion"), characterizing the East Asian intricate mixture between Mahayana Buddhism, Confucianism, and Daoism. Despite that, Buddhism in Vietnam has gone through many changes throughout history. The Hoa Hao community appears to operate as a significantly smaller and independent, marginal sect of Vietnamese Buddhism; and Cao Dai, which was once a syncretist cult, is now a full-fledged religion with a complex hierarchical system of fellowship.
Significant Christian minorities of about 8% consists mainly of Roman Catholics, but with a noticeable minority of new Protestant groups. The likely largest Protestant churches are the Evangelical Church of Vietnam and the Montagnard Evangelical Church.
A syncretic blend of Sunni Islam and the localized Bashi Islam is practiced mainly by the ethnic Cham minority, but there are also a few ethnic Vietnamese adherants to Islam in the southwest.