Bai Tu Long - Ha Long are like twin bays in the Northeast island region. While Ha Long Bay has service and tourism activities that reach 15 million visitors per year, Bai Tu Long Bay is still dull, with many landscapes without human footprints. Currently, the Party and the State are encouraging the development of sea and island tourism, but here it is like "the upper door is open - the lower door is still locked".

Bai Tu Long includes islands with a total area of ​​61.25 km2 and an aquatic marine area of ​​96.58 km2; with over 630 islands, 23 of which are inhabited (not including Cam Pha city). Of which, Van Don has 600 islands, 20 of which are inhabited; Co To has 30 islands, 3 of which are inhabited. The hydrological area is defined according to administrative boundaries; but in reality, the boundaries of Lan Ha Bay, Ha Long Bay, Bai Tu Long Bay have not been marked... The bays along the mainland, belonging to the Gulf of Tonkin in the Northeast sea area have quite similar tidal amplitudes, aquatic life, geomorphology, and vegetation. When the Mining Area was taken over (April 25, 1955), the waters of Ha Long Bay still had 3 inhabited islands and they were lost during urbanization, now only Tuan Chau Island remains.

Bai Tu Long Bay has cultural sediments, spiritual tourism and eco-tourism values; in which Soi Nhu culture is the cradle of prehistoric Vietnamese people dating back about 25,000 years ago, equivalent to Hoa Binh culture; Vo Nhai culture (Thai Nguyen). Historically, with the classic naval battle of Van Don in 1288, Nhan Hue Vuong Tran Khanh Du commanded the Tran Dynasty army and people to defeat the Yuan - Mongol army's food ships led by enemy general Truong Van Ho, when invading our country for the third time. Van Don still has many outpost relics of feudal dynasties such as the fortress and the ancient citadel of the Mac Dynasty on Ngoc Vung Island.

Van Don commercial port was a bustling trading port during the three feudal dynasties of Ly, Tran, Le with 7 glorious centuries. A living treasure of Vietnamese seaport history. Accordingly, cultural and spiritual works were built; especially the central area of ​​Van Don commercial port such as: Cong Tay Island with 5 pagodas, 100-room Lam pagoda, 14-storey tower... a treasure of tangible and intangible culture, a major religious center in the Northeast sea. Bai Tu Long Bay is recognized as the birthplace of the coal export seaport, associated with Ke Bao coal mine, the earliest mining profession in Quang Ninh mining area. It is an attractive real-life museum for the pleasure of learning about the history of spiritual culture, the history of mining and Vietnamese seaport craft villages.

Bai Tu Long Bay is a primeval forest with Ba Mun Nature Reserve above, and a rare marine ecosystem below. Ba Mun Nature Reserve was approved by the Prime Minister to be upgraded to Bai Tu Long National Park under Decision No. 85/2001/QD-TTg dated June 1, 2001, with an area of ​​15,783 hectares, including 6,125 hectares of forest and forest land and 9,650 hectares of sea surface, lagoons, and mangrove tidal flats, with over 80 large and small islands. Bai Tu Long National Park is a large area with a rich ecosystem, with 2,415 species of organisms, including 1,195 species of forest flora and fauna and 1,220 species of marine life.

The total number of wild animals and fish species recorded in the Vietnam Red Book and the World Red Book is 108 species, typically sea turtles, green turtles, and dolphins. The highlight of Bai Tu Long National Park is Ba Mun Island with an area of ​​about 1,800 hectares, considered a biological treasure with diverse species of animals and plants in the forest with many large trees belonging to the family of the four-legged wood such as ironwood, ironwood, sen, tau... ancient tree trunks that 2-3 people can hug; and many wild animals, underwater coral reef ecosystems with 106 species. Bai Tu Long National Park is the largest conservation area in the Northeast. On May 19, 2017, Bai Tu Long National Park was awarded the certificate of ASEAN Heritage Park, the first and currently only ASEAN Heritage Park in Quang Ninh.

Bai Tu Long Bay was created by the second geological period with a unique topography, like a giant island art painting. On the rocky islands, there are famous caves such as Cap Ky Nhay, Cap Ky Gia, underground caves through Cai De mountain; small isolated mountains with majestic shapes such as chopsticks (spinning stone), chicken pair stone, crow stone, black stone, husband stone, on stone, three-star stone...; La Vong culvert, Lo O lagoon, Cai De lagoon with an area of ​​over 10 hectares... On the water surface, there are floating archipelagos of fertile land, long crystal sand beaches that sometimes appear and sometimes disappear according to the tide level. The coastline is lined with rows of casuarinas and native myrtle forests rustling in the south wind, captivating visitors.

Recently, the world-famous travel website Lonely Planet suggested to international visitors the top 10 tourist destinations to explore the culture, cuisine and hidden gems of Vietnam; in which, Bai Tu Long Bay ranked 3rd in this list. The New York Times (USA) once voted Bai Tu Long Bay as one of the attractive tourist seaplane service destinations. Bai Tu Long Bay's tourism potential is huge, but has not been properly exploited. In the year before the Covid-19 pandemic, Bai Tu Long Bay's prosperous economy only welcomed about 1 million tourists.

Tourists from all over the world come to Bai Tu Long Bay, mainly to visit spiritual tourist attractions, visit Cai Bau Pagoda, Cap Tien Temple and visit and relax at traditional beaches in Co To Island and Van Hai archipelago. On the water, boats mainly take passengers from the island commune, transport goods, and cultivate aquatic products. Many islands have waves, as if listening to the thousand-year-old echo of the sea; fine white crystal sand beaches, primeval forests with birds calling in flocks, green arches casting shadows in the rising tide, the scenery is as beautiful as a watercolor painting but deserted, with few human footprints.