Location: Off the coast of Hai Phong City, near Ha Long Bay, northern Vietnam.
Part of: Cát Bà Archipelago, with over 360 islands.
Famous for: Beautiful beaches, limestone cliffs, Cát Bà National Park, and access to Lan Hạ Bay.
Less crowded and more laid-back than Ha Long Bay.
Stunning mix of mountains, jungle, and ocean.
Perfect for adventure lovers: kayaking, rock climbing, hiking, and boating.
Gateway to explore the less touristy but equally majestic Lan Hạ Bay.
A UNESCO Biosphere Reserve with tropical rainforest, caves, and wildlife.
Great for trekking, birdwatching, and spotting endangered langurs.
Popular hiking trail: Ngự Lâm Peak (1.5–2 hours) with panoramic views.
Neighboring Ha Long Bay but less commercial.
Take a boat tour or kayak through limestone karsts, floating villages, and hidden beaches.
Swim or snorkel in crystal-clear waters.
Easily accessible from Cát Bà town.
Ideal for swimming, relaxing, and watching sunsets.
Historical military site with tunnels and cannons.
Offers one of the best sunset viewpoints on the island.
A secret bomb-proof hospital during the Vietnam War.
Fascinating mix of history and adventure.
April to June & September to November: Pleasant weather, fewer tourists.
July & August: Hot and humid, with potential rainstorms (peak domestic travel season).
December to March: Cooler and drier, good for hiking but not ideal for swimming.
From Hanoi:
Bus + speedboat combo (4–5 hours total) via Hai Phong or Ha Long.
Popular companies: Good Morning Cat Ba, Cat Ba Express.
From Ha Long City or Tuan Chau Island:
Ferry or speedboat directly to Cát Bà.
From Hai Phong:
Take a ferry from Ben Binh Pier or Got Pier (shortest route).
Cát Bà Town: Most accommodation options, restaurants, and tour offices.
Eco-resorts in Lan Hạ Bay or secluded beaches: For nature lovers and honeymooners.
Homestays in local villages or near the national park for quiet retreats.
Seafood is the specialty: squid, clams, crab, and shrimp.
Horseshoe crab (sam biển) – a local delicacy.
Grilled scallops, fresh oysters, and fish hotpot are must-tries.
Book boat tours to Lan Hạ Bay in advance, especially in high season.
Bring hiking shoes and swimwear for versatile activities.
Eco-friendly travel is encouraged to protect the island's delicate environment.