When visiting Vietnam, any foreigner who wants to travel to Vietnam must fill out one entry visa application form. A valid passport and a Vietnamese visa are required. Entry visas are not available upon arrival. If you plan to leave Vietnam and re-enter from another country, you might need a visa allowing multiple entries. If you should lose your passport while in country, the U.S. Embassy and Consulate General can issue limited validity emergency replacement passports in as little as one day.  You can pay attention to Vietnam culture travel with some famous destination as follow:

Hạ Long Bay, Bay of Descending Dragons, is a UN World Heritage site, and it is one of the top sites to visit in Vietnam. Halong Bay is a four-hour drive east of Hanoi, Vietnam in the Gulf of Tonkin. It is spectacular with almost 2,000 limestone islands that rise like monoliths over the bay. The largest island in the bay is Cat Ba Island and is 87 square miles. There is a hotel on the island where many tours spend the night. In these islands are many caves with at least 20 of them open to visitors. Here is a list of some caves you might want to visit.

    Do Go (Cave of the sticks). This is where in 1288 General Tran Hung Dao stopped the invading Mongol ships by placing steel-tipped sticks in the water.
    Hang Trinh Nu (Virgin Cave).
    Thien Cung Grotto (Heavenly Cave)
    Sung Sot Cave (Surprise Cave)
    Luon Cave (Tunnel Cave)
    Trong Cave (Drum Cave)
    Tan Cung Cave (Three Palace Grotto)
    Bo Nau Cave (Pelican Cave)

Tours of the bay can be done in one very long day, but it is usually best to have a two-day tour. Some overnight stays are on Cat Ba Island or can be spent on the tour boat. Check with your travel agent for the best boat tour of Halong Bay.

Hue city, pronounced (hway) is the ancient capital of Vietnam and has many historical sites as well, though many have been damaged through war, they are still very much worth visiting. It is also a UNESCO World Heritage Site. Hue is located 335 miles south of Hanoi and 400 miles north of Ho Chi Minh City (formerly Saigon). Places to see in Hue are:

    Cua Ngo Mon (The Noon Gate) is the main southern entrance to the city and was built in 1823.
    Thai Hoa Palace, also known as the Palace of Supreme Harmony and was built in 1833.
    The Imperial City, also known as the Citadel is Hue’s main attraction. Construction began in 1804. Some areas are still badly damaged from war and are undergoing reconstruction. It is enough to see that you should allow yourself several hours at least. Hire a good English-speaking guide.
    There are also the tombs of the Emperors, which include tombs dating back to the 19th century.
    Thien Mu Pagoda, which was built in 1601 and is considered the official symbol of Hue.

Hoi An can be a side trip in the Hue area. Hoi An was major international port from the 15th to the 19th centuries. Hoi An’s Old Town is a UNESCO World Heritage Site. Visiting Old Town can be somewhat touristy, but it is free of cars and the usual karaoke style places. Quan Cong Temple built in 1653, Museum of trade Ceramics is the best place to learn of the history of the area.

Ho Chi Minh City formerly known as Saigon is a large city and has many sites to see, a few of them are.

    Notre Dame Cathedral is a reminder of the French rule and was built in 1883. Services are held only on Sundays in both English and Vietnamese.
    Jade Emperor Temple built in 1909 honors the Emperor of Jade.
    Giac Lam Temple was built in 1744 and is the oldest Chinese temple in the city.
    Mui Ne is a resort community with sand dunes and beaches; the sand dunes are an interesting contrast to Vietnams lush tropical landscape.
    Vinh Nghiem Pagoda is the largest pagoda in the city.
    There are also boat trips on the Mekong River as far as Cambodia.

Hanoi is the capital of Vietnam and is in the northern part of the country. It was the capital of French Indochina between 1887 and 1954 when it was a French colony. There is still a large influence of the French architecture. There are numerous sites to visit in Hanoi including numerous sites commemorating Ho Chi Minh, other sites are:

    One-Pillar Pagoda, which was built in 1049, The Goddess of Mercy.
    The Temple of Literature is a beautiful example of both Chinese and Vietnamese architecture. First founded in 1070 to honor Confucius became the countries first university in 1076.
    Vietnam Museum of Ethnology is dedicated to the 53 different peoples who live in Vietnam.
    Cuc Phong National Park is the largest national park in Vietnam and is a quick trip from Hanoi.

In the Hai Phong city has many places to travel such as: Du Hang Pagoda, Do Son beach, Cat Ba National Park includes over 360 small islands situated between Ha Long Bay and Bai Tu Long Bay.

Source:southeast-asia-pacific