Co To Lighthouse stands at roughly 100 meters above sea level on the peak of Co To Island, the main island in the Co To archipelago off the coast of Quang Ninh province. It's one of the few places in northern Vietnam (베트남 / 越南 / ベトナム) where you can watch the sun come up over open ocean with nothing between you and the horizon.
What it is and a bit of history
The lighthouse — "hai dang" in Vietnamese — was originally built by the French colonial administration in 1895 to guide ships navigating the waters northeast of Ha Long Bay. The current structure, rebuilt and renovated several times since, is a white cylindrical tower about 15 meters tall sitting on the island's highest hill. It's still operational, managed by the Vietnam Maritime Administration, and its light reaches roughly 27 nautical miles out to sea.
For most visitors, the lighthouse itself is secondary to the location. The hilltop clearing around it offers a full 360-degree view: open sea to the east, the scattered smaller islands of the archipelago to the south, and on clear days, the faint outline of the Quang Ninh mainland to the west.
Why travelers go
Co To Island already draws people looking for a beach destination that isn't Phu Quoc or Cat Ba. The lighthouse adds a reason to get off the beach. The sunrise from up here is genuinely good — you're facing due east over the Gulf of Tonkin, and the walk up in the pre-dawn quiet is the kind of thing that sticks with you. Beyond that, the hike itself passes through dense forest, and the hilltop is one of the few elevated viewpoints on the island. Photographers tend to come twice: once for sunrise, once for the golden hour before sunset.
It's also just a pleasant walk. Co To Island is small and flat enough that any elevation feels like an event, and the trail to the lighthouse is one of the few places where you're surrounded by forest rather than coastal scrub.
Best time to visit
The sweet spot is May through August. Co To's weather is dictated by the northeast monsoon — from October through March, seas are rough, ferries get cancelled regularly, and the island feels grey and windblown. April is transitional; you might get lucky, you might not.
June and July are peak season. The water is warm, the sky cooperates most mornings, and the ferries run on schedule. The downside: weekends in July can get crowded by Vietnamese domestic tourism standards. If you can swing a Tuesday-to-Thursday visit in June, that's the window.
Avoid Tet and major holiday weekends unless you've booked accommodation well in advance — the island has limited rooms and they fill fast.
How to get there from Hanoi
From Hanoi, you're looking at a two-stage journey: road to the coast, then ferry to the island.
Hanoi to Van Don or Cam Pha: Take a bus from My Dinh or Bai Chay bus station to Van Don (roughly 5-6 hours, around 250,000-300,000 VND). Some travelers break the trip with a night near Ha Long Bay (하롱베이 / 下龙湾 / ハロン湾), which isn't a bad idea if you're not in a rush.
Van Don (Cai Rong port) to Co To Island: High-speed ferries depart from Cai Rong port, usually once or twice daily depending on season. The ride takes about 70-90 minutes and costs around 200,000-250,000 VND per person. In peak season, there may be additional departures. Buy tickets the day before if possible — the morning-of line can be chaotic.
From the Co To ferry terminal to the lighthouse: The lighthouse is about 3 km from Co To town center. Most people rent a motorbike on the island (100,000-150,000 VND per day) and ride to the trailhead. From there, it's a 15-20 minute walk uphill.
Photo by Hải Băng on Pexels
What to do
Catch sunrise from the lighthouse hill
This is the main draw. Set an alarm, ride out in the dark, and hike up with a flashlight. The trail is well-worn and not technical, but it's unlit. Give yourself 30-40 minutes from town. Bring water and a light layer — it's breezy up top before the sun warms things.
Walk the forest trail slowly
Most people rush up and rush down. The forest on the hill is some of the densest old-growth cover left on the island. If you're into birds or just want quiet, take your time on the way back down. Early morning is best for wildlife activity.
Ride the coastal road around the island
Co To Island is only about 50 square km. A motorbike loop of the main coastal road takes 2-3 hours with stops. The stretch between Co To town and Hong Van beach on the east side is particularly good — empty road, sea views, almost no traffic on weekdays.
Swim at Hong Van Beach
The island's best beach for swimming. The sand is coarse but clean, and the water stays shallow for a good distance out. There are a few shack-style restaurants right on the sand serving grilled seafood. Not polished, not trying to be.
Visit the smaller islands by boat
Local fishermen will take you out to Co To Con (Small Co To) or nearby islets for 500,000-800,000 VND for a half-day trip, negotiable depending on group size and your Vietnamese. The snorkeling isn't world-class, but the isolation is real.
Where to eat nearby
Co To town has a handful of seafood restaurants clustered near the market and the harbor. Order whatever came in that morning — the "muc" (squid), grilled whole over charcoal, is consistently good here. "Sam" (horseshoe crab) shows up on menus seasonally; it's prepared in salads or grilled and is a regional specialty you won't find easily elsewhere.
For a proper meal, look for places where the fishing boat crews eat lunch. The rice-and-seafood plates ("com binh dan" style) run about 50,000-80,000 VND and are better than anything marketed to tourists.
Where to stay
Accommodation on Co To is mostly guesthouses and small hotels. Expect to pay:
- Budget: 200,000-400,000 VND per night for a basic fan room with shared or private bathroom.
- Mid-range: 500,000-900,000 VND for air-conditioned rooms with sea views and hot water.
- Homestays: 150,000-300,000 VND, often including a simple breakfast. Quality varies — ask to see the room first.
There are no international-chain hotels on Co To. Book ahead for June-August weekends.
Photo by Felix Schickel on Pexels
Practical tips locals would tell you
- Bring cash. ATMs exist on the island but sometimes run dry on busy weekends. Card payments are rare outside the newer hotels.
- Rent the motorbike from your guesthouse, not from the port touts. You'll pay less and have someone to call if it breaks down.
- Sunscreen and water for the lighthouse hike — there's no vendor at the top and no shade once you leave the treeline.
- Check the ferry schedule the night before departure. Cancellations happen without much warning, especially in shoulder months.
Common mistakes to avoid
- Going in winter. November through February, the island is cold, wet, and half the guesthouses close. The ferry schedule thins out and cancellations spike.
- Only staying one night. One night means you get one sunrise attempt. Weather doesn't always cooperate. Two nights gives you a buffer and lets you actually relax.
- Skipping the motorbike. The island is technically walkable, but distances add up in the heat. The lighthouse alone is a 6 km round trip from town. A motorbike changes the trip entirely.
- Expecting Ha Long Bay. Co To is not Ha Long. There are no karst towers, no cruise boats, no floating villages. It's a quiet island with good beaches and one very good hilltop view. Adjust expectations and you'll enjoy it more.
Practical notes
Co To works best as a 2-3 night side trip from a longer Quang Ninh itinerary that might also include Ha Long Bay or Cat Ba. The lighthouse is free to visit and open year-round, though the surrounding area is most enjoyable in dry weather. If you're coming from Hanoi (하노이 / 河内 / ハノイ), budget a full day each way for travel — this isn't a quick day trip.
Last updated · May 24, 2026 · independently researched, never sponsored.
