Ha Long Bay 3-day itinerary

Board an overnight cruise from Tuan Chau Marina (budget junk boats from ₫1.5M/night, mid-range from ₫3M). As the boat enters the bay, nearly 2,000 limestone karsts and islets materialise from the mist. Lunch is served on deck — fresh spring rolls, grilled fish, and Vietnamese coffee — while the boat navigates past Fighting Cocks Islet and the towering Dinh Huong rock. The UNESCO-listed landscape is unlike anything else on earth.

Dock at Bo Hon Island and climb to Sung Sot (Surprise) Cave — the largest grotto in Ha Long Bay. The cave opens into a vast chamber with stalactites and stalagmites that look like frozen waterfalls. Back at water level, kayak through low-ceilinged tunnel caves into hidden lagoons surrounded by vertical karst walls covered in jungle. The silence in these enclosed lagoons, broken only by paddle strokes and birdsong, is unforgettable.

Watch sunset from the top deck as the karsts turn golden then silhouette against the sky. Dinner is a multi-course Vietnamese seafood feast — expect prawns, morning glory, clay-pot fish, and pho. After dinner, most boats offer squid fishing from the lower deck with lights to attract the squid to the surface. The bay at night, with lanterns reflecting off still water between dark karst shadows, has an almost supernatural calm.

The cruise sails into Lan Ha Bay — Ha Long's less-visited southern neighbour with equally stunning karsts but a fraction of the boat traffic. The water here is cleaner and greener. Swim off the boat in a secluded cove or join a guided kayaking excursion through the Dark and Bright Caves. Lan Ha has over 400 islands, many with tiny hidden beaches that you might have entirely to yourself in the early morning.

Tender to Cat Ba Island, the largest island in Ha Long Bay. Climb to Cannon Fort (₫40k) for the best panoramic viewpoint in the entire bay — 360-degree views of karsts stretching to the horizon. The fort itself dates from the Japanese occupation and has tunnels and bunkers to explore. Cat Ba Town below is a lively fishing port with seafood restaurants along the harbour (grilled clam hotpot for ₫80k).

If your cruise includes a Cat Ba overnight, explore the waterfront strip. Seafood restaurants offer the catch of the day displayed on ice — pick your fish and they grill it (₫150–250k for a whole sea bass). The floating bar boats in the harbour are a unique experience with cheap Bia Hoi (₫10k/glass). Cat Ba at night is quiet and authentic compared to Ha Long City, with fishing boats bobbing under the stars.

Wake for sunrise tai chi on the top deck — most cruises offer a guided session as the first light hits the karsts and mist rises from the water. After breakfast, the boat may cruise into Bai Tu Long Bay, the northeastern extension that sees even fewer tourists. Vung Vieng floating village here is one of the most photogenic communities in the bay, with colourful houses and fish farms reflecting in the still morning water.

A last stop for swimming or kayaking in a secluded cove before the cruise begins the return journey. Lunch on deck as the boat threads back through the karst corridor. The return leg often passes different formations than the outward journey, so keep your camera ready. You will arrive at Tuan Chau Marina by midday and transfer back to Hanoi by bus (arriving around 4–5pm).

Arrive in Hanoi by early evening. Celebrate your bay adventure with egg coffee at Giang Cafe (₫35k) — the original since 1946 — tucked up a narrow staircase in the Old Quarter. Then head to Bia Hoi Corner at the intersection of Ta Hien and Luong Ngoc Quyen streets for the cheapest fresh beer in the world (₫5–10k/glass). The pavement energy here on weekend nights rivals anywhere in Southeast Asia.