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Facts about Ha Long Bay

Facts about Ha Long Bay: 12 things that will amaze you

09/03/2025 814 views

Ha Long Bay isn’t just stunning—it’s full of legends, hidden caves, and unique wonders. From dragon myths to breathtaking limestone islands, there’s so much to uncover. Dive into these fascinating facts about Ha Long Bay and discover what makes this destination truly magical!

1. Vietnam’s only 3-time recognized UNESCO World Heritage Site

One of the most impressive Halong Bay facts is that it is one of the rare places in the world to be recognized as a UNESCO World Heritage Site three times. On December 17, 1994, UNESCO first inscribed Ha Long Bay for exceptional natural beauty and aesthetic importance. On November 29, 2000, it received a second recognition for being an outstanding example representing major stages of Earth’s history, including significant geological and geomorphic processes. Most recently, on September 16, 2023, UNESCO extended its recognition to include both Ha Long Bay and the Cat Ba Archipelago, further cementing its status as a globally significant natural wonder.

UNESCO recognition for Ha Long Bay

Ha Long Bay has received UNESCO recognition three times (Source: Collected)

2. Imposing millions-of-years-old karst structures

Any Ha Long Bay introduction would highlight its breathtaking limestone formations, which have taken over 500 million years to develop through complex geological processes. The region has experienced dramatic shifts, including mountain formation, sea retreat, and marine transgressions, shaping its unique landscape.

The bay’s islands and islets are exceptional examples of tropical humid karst formations, with cone-shaped and tower-like structures sculpted by natural erosion. These towering karsts, weathered over millions of years, create a striking and globally unique seascape, making Ha Long Bay one of the world’s most extraordinary natural wonders.

Read more: Ha Long attractions: Top must-see spots for every traveler 

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3. Wonderland of nearly 2000 islands and islets

One of the most astonishing facts about Ha Long Bay is its vast collection of 1,969 islands and islets, spread across 1,553 km². Among them, 980 have official names, each contributing to the bay’s spectacular scenery. These limestone formations, both large and small, rise from the emerald waters like scattered jewels, creating a breathtaking seascape. Interestingly, Ha Long Bay and Quang Ninh province together account for over two-thirds of all the islands in Vietnam (2,779 islands), further highlighting its extraordinary natural beauty and geological significance.

Ha Long Bay islands and islets

Limestone islands and islets scattered across Ha Long Bay (Source: Collected)

4. Network of almost 60 picturesque caves

One of the most fascinating natural wonders of Ha Long Bay is its network of caves, formed over millions of years by geological and climatic changes. To date, 59 caves in Ha Long Bay have been discovered, with 19 currently open to tourists. Each cave boasts unique rock formations, creating mesmerizing landscapes hidden within the limestone karsts.

Among the most famous, Sung Sot Cave is renowned for its vast chambers and dramatic stalactites, while Dau Go Cave captivates visitors with its towering rock formations. Thien Cung Cave enchants with intricate limestone structures resembling mythical creatures, and Luon Cave, accessible only by boat, offers a tranquil passage through towering cliffs. These breathtaking caves add to Ha Long Bay’s mystique, making it an unforgettable destination for exploration.

5. Diverse and rich ecosystem

Among the remarkable information about Ha Long Bay, its diverse ecosystem stands out as a key highlight. The bay is home to various habitats, including mangrove forests, limestone mountains, caves, coral reefs, seagrass beds, and tidal lagoons, all supporting an incredible range of wildlife. With seawater temperatures averaging 19–25°C, these ecosystems thrive in a stable and favorable environment.

Ha Long Bay hosts over 1,000 plant species and numerous animal species, including 4 amphibians, 10 reptiles, 40 birds, and 14 mammals. Its marine biodiversity is equally impressive, featuring over 300 fish species, 545 benthic animals, 154 types of coral, 35 plankton species, 139 seaweed species, 5 seagrass species, and 31 mangrove plant species. This extraordinary richness makes Ha Long Bay not only a stunning natural wonder but also a vital ecological treasure.

Ha Long Bay’s biodiversity

Ha Long Bay is rich in biodiversity, with diverse marine life and ecosystems (Source: Collected)

6. Home to a fascinating ancient floating village

Among the many wonders of Ha Long Bay, Cua Van floating village stands out as a place where history and tradition remain alive. Tucked between majestic limestone formations and tranquil waters, this centuries-old village is home to a vibrant fishing community that has adapted to life on the water for generations.

In 2023, Bright Side ranked Cua Van among the world’s most picturesque, fairytale-like villages. Visitors can explore the village by boat, experience daily life on the water, and learn traditional fishing techniques from locals. For those interested in facts about Ha Long Bay Vietnam, Cua Van stands as a remarkable example of cultural heritage, offering a glimpse into Vietnam’s enduring maritime traditions.

7. Ancient cultural imprints from prehistoric settlements

Ha Long Bay is one of the cradles of ancient Vietnamese civilization, with evidence of prehistoric settlements dating back 18,000 to 3,500 years ago. Archaeological research has uncovered three successive cultures: Soi Nhu (18,000–7,000 BCE), Cai Beo (7,000–5,000 BCE), and Ha Long (3,500–5,000 years ago).

Traces of these ancient communities have been found within the core area of Ha Long Bay, particularly in Me Cung Cave, Tien Ong Cave, Bo Nau Cave, and Thien Long Cave. These discoveries highlight the bay’s deep historical significance, adding another layer to its natural and cultural heritage.

archaeological significance of Ha Long Bay

Archaeological evidence shows the presence of early human civilizations in Ha Long Bay (Source: Collected)

Read more: Meaning of “Ha Long” – the origin of Vietnam’s natural wonder

8. Nearly 200 stunning swimming spots

Among the many Ha Long Bay interesting facts, one that surprises many visitors is the presence of nearly 200 swimming spots nestled along the bases of limestone islands. These Ha Long Bay beaches, though often small, feature soft, clean sand and breathtaking scenery, making them hidden gems in the bay.

However, at present, only Titop Beach on Ti Top Island, located on tour route number 2, is officially open to visitors. Despite this, the untouched beauty of the bay’s secluded beaches adds to its allure, offering a glimpse of Ha Long Bay’s unspoiled charm.

9. A wide range of activities for tourists

Ha Long Bay is not only famous for its stunning landscapes but also for the variety of activities it offers visitors. From cruising through emerald waters to kayaking in Ha Long Bay or boarding a bamboo boat to explore hidden caves, there are endless ways to experience the bay’s beauty.

Thrill-seekers can take a seaplane flight for a breathtaking aerial view, while cultural explorers can visit floating villages and witness the traditional way of life. Additionally, a trip to a pearl farm provides insight into the intricate process of pearl cultivation. Among the many ways to experience this natural wonder, these activities highlight why it remains one of the most fascinating destinations—just one of the many interesting facts about Ha Long Bay worth knowing.

Ha Long Bay activities

Cruising is a must-do activity to enjoy the stunning views of the limestone islands and crystal-clear waters (Source: Collected)

More about: 25 unmissable things to do in Ha Long Bay to add to your bucket list!

10. Fresh and vibrant local cuisine

Ha Long cuisine is a major draw for travelers with its diverse, fresh, and incredibly flavorful seafood. Local specialties such as grilled squid cakes, horseshoe crabs, clams, and other seafood delicacies are highly regarded for their unique taste and quality. These ingredients are expertly prepared using both traditional Vietnamese cooking techniques and international culinary styles, appealing to a wide range of palates.

Whether enjoying a steaming bowl of Vietnamese seafood hotpot or savoring a perfectly grilled lobster, visitors can experience the finest flavors of the bay. Dining at a floating restaurant or aboard a luxury cruise further elevates the experience, making Ha Long’s cuisine an unforgettable highlight of any journey.

11. Winner of numerous prestigious prizes

Among the many facts about Ha Long Bay, one of the most remarkable is its consistent recognition by international organizations. From UNESCO World Heritage status to accolades from leading travel platforms, the bay’s breathtaking landscapes continue to captivate travelers and experts alike.

Some of the most notable awards include:

  • Three-time UNESCO World Heritage designation (1994, 2000, 2023)
  • IUGS recognition as an International Geological Heritage Site (2024)
  • Member of the Most Beautiful Bays in the World Club (since 1997)
  • One of the New 7 Wonders of Nature by New Open World (2012)
  • Asia’s Leading Tourist Attraction by the World Travel Awards (2021)
  • The world’s 20 most beautiful geological wonders by Rough Guides (2014)
  • Esquire’s list of the world’s 25 most breathtaking landscapes (2018)
  • Top 10 most stunning destinations globally by The Travel (2022)
  • CNN’s top 25 most beautiful places in the world (2023)
  • One of the best destinations in the world in TripAdvisor’s Travelers’ Choice Awards (2024)
Ha Long Bay's international recognition

Ha Long Bay facts note that it is frequently ranked among the top natural wonders by international travel publications (Source: Collected)

12. The setting for several Hollywood blockbusters

Ha Long Bay has served as a filming location for several international movies. Films such as Indochine (1992), Pan (2015), Kong: Skull Island (2017), Life (2017), and The Creator (2023) have captured the bay’s striking limestone karsts and tranquil waters. The unique beauty of Halong Bay, with its dramatic cliffs and emerald waters, has made it an ideal setting for both action and fantasy scenes, further establishing its reputation as a sought-after destination for global filmmakers.

Delving into these facts about Ha Long Bay illuminates why it stands as one of Asia’s most celebrated natural wonders. From the scientific significance of its karst ecosystem to the legends that dance across its emerald waters, Ha Long Bay represents the perfect harmony between nature’s artistry and Vietnam’s cultural soul. As one of Earth’s most stunning seascapes, it continues to inspire wonder and respect worldwide.

While you’re in Ha Long, elevate your experience with a luxurious stay at Vinpearl Resort & Spa Ha Long, where modern amenities blend seamlessly with breathtaking bay views. The resort’s elegant accommodations and world-class dining options ensure a memorable stay amid one of Vietnam’s most spectacular natural wonders.

Vinpearl Resort & Spa Ha Long, a stunning resort built on an entire island

Vinpearl Resort & Spa Ha Long, a stunning resort built on an entire island

 

Book rooms in Vinpearl Resort & Spa Ha Long

 

Beyond Ha Long Bay, Vietnam offers numerous captivating destinations, including Hanoi, Hoi An, Nha Trang, Phu Quoc, and many more waiting to be explored. Add excitement to your Vietnam journey at VinWonders, Vietnam’s premier entertainment destination. With world-class attractions, thrilling rides, and immersive cultural experiences, it promises fun for all ages. 

When seeking rest between adventures, Vinpearl hotels and resorts offer sophisticated accommodations. Their luxurious settings and attentive service provide the perfect complement to your Vietnam discovery.

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