1. General Introduction to Soi Sim Island

Overview of Soi Sim Island - Quang Ninh (Source: Collected)
With its pristine beauty and rich ecosystem, Soi Sim Island is like a hidden green gem, full of mystery and charm. This place has become an unmissable destination on the journey to explore the world heritage.
1.1. Geographical location and area of Soi Sim Island
Soi Sim Island is located in the southeast of Ha Long Bay, Quang Ninh province, about 10 km from Bai Chay Tourist Port and only about 700 m from Titop Island. This convenient location makes travel along the bay's tour routes extremely easy.
With an area of about 8.7 hectares, Soi Sim Island has a special terrain consisting of two hills about 100 m high, with a sunken middle part forming a small valley, and gentle slopes towards the southwest. The geological structure is mainly red-yellow soil and weathered soil, which has created a solid foundation for a diverse ecosystem. The rich primeval forest with many endemic plant species contributes to forming a rare and distinctive vegetation cover in the bay.
1.2. Origin of the name of Soi Sim Island
The name "Soi Sim" carries a poetic story about the purple sim flower (Rhodomyrtus tomentosa) that grows abundantly all over the island. Every summer, the purple sim flowers bloom like velvet carpets covering the hillsides, creating a romantic scene unlike any other island in Ha Long Bay.
Legend has it that in the past, local people often went to the island during the sim fruit season to pick the fruit for food and traditional medicine. It was the year-round lush green sim bushes along with the characteristic purple color of the flowers that led to the name Soi Sim being formed and passed down from generation to generation.
1.3. Ecological importance and conservation
Soi Sim Island plays a key role in the Ha Long Bay ecosystem as a "green lung" amidst the sea. It hosts many species of primeval forest plants, marine life, and coral, and endemic flora and fauna with high biodiversity. The scientific and environmental value of the island has been highly appreciated by researchers.
Due to these precious values, Soi Sim Island is prioritized for conservation and development towards sustainable ecotourism. All tourism exploitation activities are strictly controlled to ensure they do not harm the unique natural structure. The Ha Long Bay Management Board has established strict regulations to protect the environment and maintain long-term ecological balance.
2. Ecosystem and natural characteristics of Soi Sim Island
Ecosystem and natural characteristics of Soi Sim Island (Source: Collection)
Discovering Soi Sim Island is a journey to a magical ecological world. Every step on the island brings visitors closer to the rich and pristine beauty of nature.
2.1. Endemic Sim Forest and Rare Plant Species
The endemic sim forest is the soul of Soi Sim Island, concentrating over a dozen different plant species according to biological researchers. Additionally, the island hosts a diverse presence of native forest trees such as chestnut, tram, and mulberry, along with many rare medicinal herbs. This combination creates a rich and unique plant ecosystem.
The most beautiful time to admire the beauty of the sim forest is from May to August each year, when the purple sim flowers bloom simultaneously across the hillsides. The small, charming flowers with varying shades of purple create a vibrant natural picture. The dense, year-round green vegetation not only brings beauty but also plays an important role in stabilizing the island's environment and preventing natural erosion.
2.2. Fauna and Marine Life Around Soi Sim Island
The fauna on Soi Sim Island is not overly abundant but has its own unique characteristics, with native forest birds, insects, and small animals closely associated with the purple sim trees. The chirping of birds in the early morning creates a clear natural melody, bringing a sense of relaxation to visitors.
Surrounding the island is clear blue water, hiding a vibrant marine world with soft seaweed and colorful coral reefs. Visitors can immerse themselves in the cool water to observe, or simply stroll along the sandy beach to feel the lively rhythm of this place.
Special ecological experiences at Soi Sim Island include coral viewing, fish observation, and kayaking through the calm waters around the island. These moments offer the most complete sense of immersion in nature.
2.3. Outstanding Landscape of Soi Sim Island
The panoramic view of Soi Sim Island appears like an exquisite lacquer painting with a perfect combination of crystal-clear blue sea, a 200m long white sandy beach, and lush green sim forest embracing the island. Seen from afar, the island resembles a sparkling green jewel in the heart of the majestic Ha Long Bay.
The island's peak, about 100m high, is the most ideal viewpoint, where visitors can cast their eyes over the panoramic view of Ha Long Bay from various angles. The southeast and northwest directions offer spectacular scenes with thousands of limestone islands rising from the water. This is also the most favored photo-taking spot among young people.
Impressive photo spots on Soi Sim Island range from the fine white sandy beach, the path winding through the purple sim forest, to the natural rocky shores. At each location, visitors can capture unique frames, leaving unforgettable impressions on their journey of discovery.
3. Guide to Traveling to Soi Sim Island

Guide on how to travel to Soi Sim Island (Source: Compilation)
The journey to Soi Sim Island begins with choosing a suitable mode of transport from Hanoi. Each option offers unique and interesting experiences.
3.1. Moving from Hanoi to Ha Long Bay
High-quality passenger buses from My Dinh or Gia Lam bus stations to Ha Long are a popular choice with ticket prices ranging from 200,000 - 300,000 VND/person/trip. Travel time is about 2.5-3 hours, depending on traffic conditions. Reputable bus companies usually have regular schedules from 6 AM to 6 PM.
High-end limousine service is increasingly popular with prices ranging from 320,000 - 400,000 VND/person/trip. Comfortable seats, cool air conditioning, and free wifi create a worthwhile travel experience. Limousines often offer door-to-door pick-up and have more flexible schedules than regular buses.
High-speed boats are an interesting option if you are departing from Hai Phong or Cat Ba. The fast boat service connects directly to Tuan Chau Port with short travel times and beautiful scenery along the way. Most tourists still prefer to travel by private car, bus, or limousine to Tuan Chau/Bai Chay Port to begin their bay tour.
3.2. Choosing a boat to Soi Sim Island for a visit in 2025
To reach Soi Sim Island, visitors need to join tourist boat routes to visit Ha Long Bay departing from Tuan Chau Port or Bai Chay International Tourist Port. Currently, the island does not have a separate boat service but must be included in comprehensive tour packages.
The types of boats serving visitors to Soi Sim Island are very diverse, from traditional wooden boats with strong local cultural characteristics to modern high-speed boats and luxury cruises. Traditional wooden boats usually accommodate 20-40 passengers, suitable for families or groups of friends who want a cozy experience. Luxury cruises with larger capacity are equipped with full amenities such as restaurants, karaoke, and cabins.
The travel time from the pier to Soi Sim Island is about 60-90 minutes, usually included in 4-hour or 6-hour tour programs combined with other attractions such as Titop Island, Sung Sot Cave, Bo Hon Island. Visitors should book tickets online through reputable travel agents or choose an all-inclusive tour to ensure availability and a reasonable itinerary, especially during the peak season from April to October.
3.3. Means of transport on Ha Long Bay to Soi Sim Island
The journey on Ha Long Bay to Soi Sim Island offers wonderful experiences as visitors admire the majestic scenery of the world heritage site. Boats usually follow combined routes, visiting many different attractions in a single trip.
Compared to the famous and tourist-attracting Titop Island, Soi Sim Island offers a quieter and more pristine space. This difference creates a unique appeal for those who love tranquility and want a complete ecological experience. The short distance between the two islands also makes it convenient for combined visits.
Along the way, visitors will enjoy the unique limestone karst landscape with thousands of large and small islands of unique shapes. The cool air of the bay, the gentle sound of waves lapping the boat, and the golden sunlight shining on the water create an unforgettable romantic atmosphere.
4. Outstanding experiences not to be missed at Soi Sim Island

Highlight experiences at Soi Sim Island (Source: Lao Dong Newspaper)
Every corner of Soi Sim Island holds unique and interesting experiences. From relaxing activities by the beach to exploring wild nature, the island offers visitors memorable moments.
4.1. Swimming and snorkeling to see coral at the two beaches of Soi Sim Island
The two beaches on Soi Sim Island are unmissable highlights with crystal-clear blue seawater and long stretches of fine white sand. Unlike noisy beaches elsewhere, this is a peaceful paradise completely separate from the hustle and bustle of urban life.
Snorkeling activities to see coral at Soi Sim Island offer an unforgettable experience as visitors can admire the colorful underwater world. Under the clear water, small, beautiful tropical fish swim freely among colorful coral formations. This experience is suitable for all ages and does not require high professional skills.
The most ideal time for swimming and taking photos at Soi Sim Island is early morning or late afternoon when the sunlight is gentle. At this time, the purple color of sim flowers combined with the blue sea and white sand creates a picturesque scene, bringing beautiful souvenir photos.
4.2. Climbing mountains to explore Soi Sim Island and fully admire Ha Long Bay
The path to the summit of Soi Sim Island has 400 steps, winding through lush green sim forests with a moderate slope. The climbing time is about 15-20 minutes, suitable for both children and the elderly. Along the trail, visitors will immerse themselves in the characteristic sim forest space with the gentle fragrance of flowers and the chirping of birds.
Standing on the 100m high summit, the feeling of successful conquest combined with the beautiful scenery will make all climbing efforts worthwhile. The panoramic view of Ha Long Bay appears at your feet with thousands of large and small islands scattered on the water surface like precious jewels.
The summit of Soi Sim Island is also the most favored "check-in" spot for young people with a 360-degree panoramic view. Early morning and dusk are the times with the best lighting to get impressive photos. Many visitors share that this is an indispensable experience when visiting Soi Sim Island.
4.3. Visiting the ecological museum of Soi Sim Island
The ecological museum on Soi Sim Island is a unique architectural work designed in the shape of a sim flower petal, creating harmony with the surrounding natural landscape. This is where diverse specimens and detailed information boards about the endemic flora and fauna of the island and the Ha Long Bay region are displayed.
The museum space is scientifically arranged with different exhibition areas, from introducing the island's geology and formation history to characteristic species. Each specimen has detailed explanations, helping visitors understand better about the biological value and conservation significance of Soi Sim Island.
Especially, the museum is an ideal educational venue for children and families with engaging interactive activities. Children can participate in games to learn about nature, learn how to protect the environment through vivid stories. The ecological museum of Soi Sim Island not only has sightseeing value but also contributes to raising environmental protection awareness for the community.
4.4. Participating in picnics, taking photos, and relaxing on the island
Soi Sim Island provides full support services for picnic activities with rental of tables and chairs, sunshades, and necessary amenities. The picnic area is harmoniously arranged under the shade of sim trees, creating a cool and poetic space for outdoor parties.
Visitors can buy drinks, snacks, and souvenirs at the on-site shop. The products all bear the distinct mark of Soi Sim Island such as sim tea, sim jam, or handicrafts made from natural ingredients. Reasonable prices and good quality create satisfaction for visitors.
When organizing picnics on Soi Sim Island, visitors should pay attention to environmental protection by not littering indiscriminately, maintaining general hygiene, and respecting the local flora. Although the island currently does not have overnight accommodation services, visitors can fully rest and relax throughout their visit and enjoy the fresh island sea air.
5. Tourism services and infrastructure at Soi Sim Island 2025

Tourism services and infrastructure on Soi Sim Island. (Source: Collected)
To best serve visitors, Soi Sim Island has invested in building a synchronized infrastructure and service system. All facilities are designed in harmony with the natural environment, ensuring a comfortable experience for visitors.
5.1. Facilities serving visitors on Soi Sim Island
The beach system on Soi Sim Island is built to ecological tourism standards with clean and modern changing rooms and showers. This area is regularly maintained, ensuring hygiene and safety for visitors. Sun loungers and umbrellas are reasonably arranged along the beach, creating a comfortable resting space.
The central refreshment area offers a variety of drinks from soft drinks, draft beer to specialty drinks made from sim. The snack menu is also regularly updated with fresh and delicious local dishes. The souvenir shop displays many handicrafts that strongly represent the coastal culture and characteristics of Soi Sim Island .
Security and rescue services operate 24/7 during the tourist season with a team of professionally trained staff. Safety signs and sightseeing information are placed in visible locations. The public restroom system is modernly built and regularly cleaned, ensuring cleanliness throughout the island.
5.2. Experience booking a tour or visiting Soi Sim Island independently
Visitors have two main options when visiting Soi Sim Island : booking a package tour or going independently. Package tours usually include transportation, entrance tickets, lunch, and professional guide services. Tour prices range from 800,000 - 1,200,000 VND/person depending on the program and included services.
If choosing to go independently, visitors have more flexibility in terms of time and activities. You can buy individual boat tickets for about 400,000 - 600,000 VND/person for a half-day tour, then freely choose services on the island according to your needs. This method is suitable for experienced visitors who want to explore in their own way.
An important note is to check the departure times carefully, usually at 8 AM and 12 PM daily. Especially during the peak season from May to September, it is advisable to book tickets at least 2-3 days in advance to ensure availability. Some services within the Sun Group ecosystem also offer programs combining visits to Soi Sim Island with other tourist attractions, providing diverse experiences and cost savings.
6. Travel tips and experience exploring Soi Sim Island 2025
Travel tips and experience exploring Soi Sim Island (Source: Collected)
To have a complete and safe trip to Soi Sim Island, visitors should refer to practical experiences from previous trips. These small tips will help you fully enjoy the beauty of the island.
6.1. Ideal time to visit Soi Sim
The period from April to October is considered the most perfect time to visit Soi Sim Island. Dry weather, little rain, and beautiful sunshine create favorable conditions for outdoor activities. Especially, from May to August is the season of blooming sim flowers, when the entire island is covered in a characteristic romantic purple hue.
During the day, early morning from 7 AM - 9 AM and late afternoon from 3 PM - 5 PM are golden hours for visiting. At this time, the sunlight is gentle, not too harsh, favorable for swimming and taking photos. Pleasant temperatures also make climbing to the island's peak more comfortable.
Avoid visiting Soi Sim Island in the middle of the day from 11 AM - 2 PM when the sun is harsh, which can cause discomfort and affect health. The rainy season from November to March may limit some outdoor activities, but it still offers a different beauty with fresh air and fewer tourists.
6.2. Suggested clothing and essential items for visiting Soi Sim Island
Suitable clothing for visiting Soi Sim Island should prioritize comfort and suitability for outdoor activities. Shorts, cool cotton t-shirts, and swimwear are essential items. A wide-brimmed hat or conical hat helps effectively shield from the sun, and sunglasses protect eyes from UV rays.
Sunscreen with SPF 30 or higher is an essential companion, helping to protect the skin throughout the outdoor trip. Besides that, a pair of non-slip beach sandals will bring comfort when moving on sand or wet rocks. And to make the trip more complete, a waterproof bag will be a useful choice, helping to safely protect phones, cameras, and other important electronic devices.
Visitors should bring personal drinking water and some light snacks if planning a picnic on Soi Sim Island. Personal trash bags demonstrate environmental awareness and maintain general hygiene. Motion sickness medication may be necessary for those prone to seasickness during the trip across the bay.
6.3. Notes on environmental protection and ecological experience
Soi Sim Island is a rare ecological area that needs to be protected and preserved for future generations. Visitors are absolutely forbidden from littering, especially with non-biodegradable plastic materials. All waste should be put into trash cans or brought back to the mainland for disposal.
Breaking sim flower branches or other forest plants is a strictly prohibited act. The island's flora plays an important role in maintaining ecological balance and takes many years to recover if damaged. Visitors should only take photos and admire the beauty without directly impacting nature.
When visiting and taking photos on Soi Sim Island, it is necessary to comply with regulations regarding accessible areas and respect guide signs. Keep conversation volume moderate to avoid disturbing wildlife and other visitors. Use reef-safe sunscreen to protect the coral ecosystem.
7. Suggested itinerary for visiting Soi Sim Island combined with nearby attractions

Suggested itinerary for visiting Soi Sim Island (Source: Collected)
Planning a visit to Soi Sim Island in combination with other locations will help visitors optimize their time and costs. Here are some practical and effective itinerary suggestions.
7.1. Sample half-day or 1-day itinerary to explore Soi Sim Island
A half-day tour to visit Soi Sim Island usually starts at 8:30 AM with a boat pickup at Bai Chay Port. After 90 minutes of travel and sightseeing on the bay, visitors arrive at the island around 10 AM. The time from 10 AM - 12:30 PM is for swimming, taking photos, and enjoying the peaceful atmosphere. A light lunch can be organized right on the island with a beautiful sea view before returning to the pier at 2:30 PM.
A full 1-day itinerary will combine Soi Sim Island with the famous Titop Island. Departing at 8 AM, visitors will visit Titop first for hiking and swimming from 9:30 AM - 11:30 AM. Then, move to Soi Sim Island for lunch and rest from 12 PM - 3 PM. In the late afternoon, visit Thien Cung Cave or Sung Sot Cave before returning to the pier at 5:30 PM.
During your time at Soi Sim Island , it is recommended to spend the first 30 minutes visiting the ecological museum and learning about the island. Then, spend 1 hour for swimming and snorkeling. The next 45 minutes are for climbing to the summit and taking panoramic photos. The remaining time is for picnicking, relaxing, and souvenir shopping.
7.2. Experience suggestions with Ha Long Bay ecological tours in 2025
Ha Long Bay ecological tours in 2025 are increasingly focusing on environmental protection and providing meaningful educational experiences. The "Explore Three Ecological Islands" tour combining Soi Sim Island , Bo Hon Island, and Cua Van fishing village is highly rated for its quality. Tour prices range from 1,500,000-2,000,000 VND/person including transportation from Hanoi, a premium boat, and fresh seafood meals.
The "Soi Sim Island - Titop VIP" tour is for families seeking a premium experience with a luxury yacht and private service. This program costs from 2,500,000 - 3,200,000 VND/person but includes many special services such as relaxing massages on the boat, a BBQ dinner, and sunset viewing on the bay.
Visitors looking for discounted tours to Soi Sim Island should follow promotional programs in early April and late September. When booking at least 1 month in advance, visitors often receive attractive discounts. Additionally, tours within the Sun World Ha Long ecosystem also offer many attractive combos, combining visits to Soi Sim Island with Sun World Ha Long Park, opening up a rich journey from nature to modern entertainment.
Soi Sim Island is worthy of being a precious gem in the heart of the world heritage site of Ha Long Bay with its pristine ecological beauty, characteristic purple sim forest, and unforgettable experiences. The island not only offers perfect relaxation but also educates visitors about the importance of environmental protection and sustainable tourism development.
Make sure to include Soi Sim Island in your list of must-visit destinations for your Ha Long exploration in 2025. This place will surely bring you wonderful moments and the most beautiful memories of this majestic heritage land!