7 Untouched Islands in Halong Bay You Must Explore for a Peaceful Escape

Discover the quiet, pristine side of Vietnam’s most famous bay, where emerald waters, hidden lagoons and timeless limestone cliffs await those who crave tranquility.

Discover the Quiet Charm of Halong Bay’s Untouched Side

Halong bay - UNESCO heritage site — Halong bay – UNESCO heritage site

Halong Bay, a UNESCO World Heritage Site, has long been celebrated as one of the most breathtaking natural wonders in Southeast Asia. With over 1600 limestone islands rising dramatically from emerald-green waters, the bay offers scenery so surreal that it feels like stepping into a watercolor painting. Yet, for many travelers, especially first-timers, the dream can sometimes get crowded. Popular spots like Titop Island or Sung Sot Cave attract large tour groups and boats, especially during weekends and holidays.

If you’re someone who values peace, authenticity and connection with nature, there’s another side of Halong waiting for you, the untouched islands scattered across its quieter corners. Whether you’re a couple seeking romance, an Indian family looking for calm adventure or a solo traveler chasing authentic beauty, this guide will help you uncover 7 hidden islands that still preserve the true spirit of Halong Bay. And the best part? You can explore many of them on a premium one-day cruise like Otis Day Cruise or Reina Day Cruise, both offering curated, less-touristy routes.

Do You Know What Is Halong’s Quiet Twin and Should You Try It on a Day Trip?

Cong Do Island – The Hidden Coral Kingdom

Tucked away in Bai Tu Long Bay, Cong Do Island is a hidden jewel far from the main tourist circuit. The island’s coastline is framed by small lagoons, coral reefs and limestone formations shaped over millions of years. What makes Cong Do truly special is its underwater world, vibrant coral beds and schools of colorful fish make it a dream spot for snorkeling and kayaking. Unlike the crowded beaches elsewhere, you’ll often find yourself surrounded by nothing but the sound of gentle waves and birds overhead. Perfect for:

Eco-travelers and photographers.
Couples seeking privacy.
Snorkeling and kayaking adventures.

Pro tip: Visit during early morning hours for the clearest waters and best photo lighting.

Bo Hon Island – Nature and Legends Combined

Bo Hon Island is not only beautiful, It’s steeped in legend. Locals tell stories of the Trinh Nu (Virgin) Cave, symbolizing love and loyalty. For couples, it’s a poetic stop, where romance meets mythology. The island also features hidden caves and small lagoons where you can kayak quietly, away from larger cruise ships. Its cliffs and rock formations make it one of the most photographed spots in Halong Bay, but few travelers ever see it up close. Perfect for:

Couples and honeymooners.
Travelers who enjoy folklore and culture.
Photography enthusiasts.

Don’t miss: A visit to Sung Sot Cave (Surprise Cave) nearby, but go early or late to avoid crowds.

Co To Island – Where Time Slows Down

While technically part of Quang Ninh province rather than Halong Bay proper, Co To Island is so serene and stunning that it’s worth including. Known for its white sandy beaches, crystal-clear waters and lush forests, Co To feels untouched by mass tourism. Walk barefoot on Hong Van Beach or take in the sunset at Van Chay Beach, both are among the most romantic spots in northern Vietnam. The local seafood, including freshly grilled squid and sweet clams, makes every meal a treat. Perfect for:

Indian honeymooners and beach lovers.
Those seeking a quiet overnight extension after a Halong day cruise.
Families wanting relaxed coastal experiences.

Pro tip: Co To is best visited from April to September, when the sea is calm and skies are clear.

Bai Tu Long Islands – The Hidden Halong

Bai Tu Long beach - Halong’s Quiet Twin — Bai Tu Long beach – Halong’s Quiet Twin

If Halong Bay is the queen of Vietnam’s seascapes, Bai Tu Long Bay is her quiet, graceful sister. Located northeast of the main bay, Bai Tu Long offers the same majestic limestone scenery but far fewer boats. Here, you’ll find small, untouched islands like Quan Lan, Ngoc Vung and Cap La, where local fishing communities live in harmony with nature. Kayaking through these islands feels like entering another world, the water is clearer, the air fresher and the silence deeper. Perfect for:

Nature lovers and peace seekers.
Travelers who dislike crowds.
Indian families or groups who prefer exclusive experiences.

Fun fact: Many luxury and boutique day cruises now include Bai Tu Long in their itineraries — ask your travel agent or cruise operator about this option.

Ban Chan Island – The Beach You’ll Have to Yourself

Imagine a soft, white-sand beach with turquoise water and not a single noisy tourist around. That’s Ban Chan Island, one of Halong’s best-kept secrets. Accessible mainly through private or premium cruises, this island is ideal for swimming, kayaking or simply relaxing on the beach. Some cruises organize beach barbecues here, giving you the ultimate “deserted island” experience. Perfect for:

Private groups and families.
Indian travelers looking for peaceful beach time.
Cruise lovers who prefer exclusive stops.

Pro tip: Bring a light cover-up or hat, there are few shaded areas, but plenty of sunshine.

Soi Sim Island – A Quieter Alternative to Titop

If you want a great viewpoint of Halong Bay but wish to skip the tourist crowd at Titop Island, head to Soi Sim. Located nearby but visited by fewer boats, Soi Sim offers an easy hike to the top where a stunning panoramic view awaits. The island’s small beach is perfect for cooling off afterward and it’s much more peaceful than Titop. Perfect for:

Active travelers.
Couples and photographers.
Day trippers who want a balance of activity and relaxation.

Fun fact: Soi Sim means “myrtle island”, It’s named after the local Sim fruit, often made into sweet jam or wine.

Mat Rong (Dragon Eye) Island – A Hidden Gem

Few places in Halong Bay are as photogenic as Mat Rong Island. From above, it looks like a dragon’s eye, a circular lake surrounded by cliffs and lush greenery. Access is limited to protect its fragile ecosystem, which is why it remains one of Halong’s most untouched natural wonders. You can kayak or swim in its crystal-clear lagoon, often in complete tranquility. Perfect for:

Adventurous travelers.
Drone photographers.
Nature enthusiasts who want a rare experience.

Pro tip: Not all cruises visit Mat Rong, so check with your operator beforehand, smaller boats or private tours have better access.

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How to Visit These Untouched Islands

Otis - Halong bay day cruise — Otis – Halong bay day cruise

If your goal is serenity, your choice of cruise matters. Most budget tours follow the same crowded route, but premium day cruises like Otis Day Cruise, Reina Day Cruise or Athena Cruise focus on Bai Tu Long Bay and lesser-known spots. Here’s how to plan:

Choose small-group or private cruises – fewer passengers means more flexibility and peace.
Check itineraries carefully – look for mentions of “Bai Tu Long,” “Ban Chan” or “off-the-beaten-path.”
Book directly through trusted sites like HalongBayOneDayCruise.com to ensure authentic experiences and transparent pricing.
Time your trip well – early morning departures avoid the rush.

Best Time to Visit Untouched Islands in Halong Bay

While Halong Bay is beautiful year-round, certain seasons enhance its charm, especially for those seeking quiet escapes.

October to April: Cool, dry and ideal for sightseeing. Best visibility for photography.
May to September: Warm and sunny, perfect for swimming and beach activities, but occasional showers may occur.
Avoid: National holidays and weekends, when domestic tourists crowd major spots.

For Indian travelers, combining a Halong Bay day cruise with Hanoi exploration between November and February is ideal, pleasant weather and fewer crowds.

Why Indian Travelers Love the Untouched Side of Halong Bay

Over the last few years, Indian travelers have become one of the fastest-growing visitor groups in northern Vietnam. Many are now seeking experiences beyond the typical tour, something authentic, peaceful and memorable. The untouched islands of Halong Bay offer just that.

Reasons Indian travelers love it:

Peaceful and family-friendly: A chance to relax without the noise of mass tourism.
Romantic atmosphere: Ideal for honeymooners and couples celebrating anniversaries.
Cultural connection: Locals’ simplicity and warmth resonate with Indian hospitality.
Custom dining options: Many cruises offer vegetarian, Jain or no-onion/no-garlic menus on request.

As one Indian visitor shared on social media:

“Exploring Bai Tu Long Bay felt like discovering a secret world. We had an island all to ourselves, It was spiritual and breathtaking.”

Responsible Travel Tips

Visiting untouched islands means becoming a guardian of their natural beauty. Here’s how to help preserve them:

Avoid littering: Bring back all waste, including plastic bottles.
Respect coral reefs: Don’t step on or collect coral.
Support local artisans: Buy local products or seafood to support coastal communities.
Use reef-safe sunscreen: Protect marine life from harmful chemicals.
Choose eco-friendly cruises: Many, like Otis Day Cruise, follow sustainable tourism practices.

You pay Superior double room price but you get Suite executive room.

Sample Itinerary for a Peaceful Halong Day Cruise

Morning:

Depart Hanoi at 8:00 AM → arrive at Tuan Chau Marina around 11:30 AM.
Board a premium small-group cruise (e.g., Otis Day Cruise).
Welcome drink and orientation.

Late Morning:

Sail toward Bai Tu Long Bay.
Kayaking or swimming at Ban Chan or Cong Do Island.

Lunch:

Enjoy freshly prepared seafood and vegetarian options on board.

Afternoon:

Visit Mat Rong or Soi Sim Island for light hiking or sunbathing.
Relax on deck while the boat glides through quiet lagoons.

Evening:

Tea, sunset view and cruise back to the harbor.
Return to Hanoi around 8:30 PM — refreshed and inspired.

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Experience the Real Halong Bay

Halong Bay is more than a sightseeing destination; it’s a spiritual experience. Beyond the main tourist routes lie islands that still whisper the stories of wind, water and time. For travelers, especially from India, who seek balance, peace, and authenticity, the untouched islands offer something money can’t buy: pure serenity. So the next time you plan your Halong Bay day trip, look beyond the typical stops. Discover the places where the bay still breathes quietly and let its beauty find a lasting place in your heart.