Cat Ba Island is Vietnam’s largest island and a UNESCO Biosphere Reserve located in the heart of Halong Bay’s karst landscape. While most travelers focus on bay cruises, Cat Ba itself offers incredible trekking, pristine beaches, fascinating war history, and unique wildlife — including the critically endangered Cat Ba langur.
Top Attractions on Cat Ba Island
1. Cat Ba National Park
Covering over half the island, the national park features tropical forests, limestone peaks, and diverse wildlife. Popular treks range from 1-4 hours through jungle trails with panoramic viewpoints. The park is home to 32 mammal species, 69 bird species, and over 700 plant species.
2. Hospital Cave (Hang Quân Y)
A remarkable three-story cave complex used as a secret hospital and military base during the American War (1963-1975). The cave could shelter 200 people and included operating rooms, a cinema, and a swimming pool. A fascinating piece of Vietnamese history.
3. Cannon Fort (Pháo Đài Thần Công)
Built during the Japanese occupation, this fort sits at one of Cat Ba’s highest points with panoramic 360-degree views of both Halong Bay and Lan Ha Bay. The climb is steep but the views are extraordinary — arguably the best on the island.
4. Cat Co Beaches
Three small but beautiful beaches (Cat Co 1, 2, and 3) on the island’s eastern shore. Cat Co 1 is the most developed with sunbeds and restaurants. Cat Co 3 is the most secluded and picturesque, connected to Cat Co 2 by a cliff-side walkway.
5. Lan Ha Bay
The waters directly south of Cat Ba Island form Lan Ha Bay — quieter and arguably more beautiful than Halong Bay. Our Tropical Cruise explores the best of Lan Ha Bay, while our Cat Ba Island Day Cruise combines island time with bay cruising.
How to Visit Cat Ba Island
| Option | From | Duration | Price |
|---|---|---|---|
| Cat Ba Day Cruise | Halong Bay | Full day | Contact us |
| Ferry from Haiphong | Haiphong | 45 min | ~$8 |
| Speedboat from Tuan Chau | Halong City | 30 min | ~$10 |
Easiest option: Our Cat Ba Island Day Cruise from Halong Bay includes transfer from Hanoi, bay cruising, island exploration, and lunch — all in one package.
Best Time to Visit Cat Ba
April-October: Warm weather perfect for beaches, swimming, and trekking. The island is lush and green.
November-March: Cooler temperatures ideal for trekking the National Park. Fewer tourists but some beach facilities may close.
Combining Cat Ba with Halong Bay
We recommend spending at least 2 days in the area to experience both:
- Day 1: Sea Lion 5★ Day Cruise (Halong Bay route — Sung Sot Cave, Titov Island)
- Day 2: Cat Ba Island Day Cruise (island + Lan Ha Bay)
Or for the ultimate experience: overnight cruise + Cat Ba day trip.
© 2026 Cozy Vietnam Travel.
Related Reading
- 📖 Halong Bay vs Lan Ha Bay
- 📖 Kayaking Near Cat Ba
- 📖 Complete Cruise Guide
- 🔍 Compare Cat Ba Cruise vs Others
Planning Your Cat Ba Trip
The best way to experience Cat Ba Island is as part of a Lan Ha Bay day cruise. The Tropical Cruise handles all logistics: pickup from Hanoi, expressway transfer, and a curated itinerary covering the island’s top attractions — all for $58-72/person including lunch and activities.
Cat Ba is increasingly popular with adventure travelers seeking alternatives to crowded Halong Bay. The island’s Cat Ba National Park covers 263 km² of protected jungle, home to over 1,500 plant species and the critically endangered Cat Ba Langur — fewer than 70 remain in the wild.
For those comparing options, our Halong Bay vs Lan Ha Bay guide breaks down the key differences to help you decide.
Planning Your Cat Ba Trip
The best way to experience Cat Ba Island is the Tropical Cruise day trip: Hanoi pickup, expressway transfer, and a curated itinerary covering the island’s top attractions — all for $58-72/person.
Cat Ba’s National Park covers 263 km² of protected jungle, home to over 1,500 plant species and the critically endangered Cat Ba Langur — fewer than 70 remain. For comparing options, our Halong vs Lan Ha guide breaks down key differences.
