Bạch Long is a 632 m glass-bottomed walkway at Mộc Châu Island in Sơn La province, 150 m above the valley floor. Guinness World Records recognised it on 28 May 2022 as the longest glass-bottomed bridge in the world. It sits about 10 km from the centre of Mộc Châu, roughly four hours from Hanoi, and it opens from 07:30.
What is the Bach Long glass bridge?
A walkway in two parts. A 290 m suspended span crosses between two mountains, and a 342 m walkway is fixed to the cliff face — 632 m in total, which is the figure the record is based on. The deck is French Saint-Gobain glass in three bonded layers, 40 mm thick, and it stands 150 m above the ground below, with about 145 m of clear air to the water.
The operator states the span holds around 500 people at once and the cliff section 800 to 1,000.
Which record does it actually hold?
Guinness World Records recognised Bạch Long on 28 May 2022 as the world's longest glass-bottomed bridge, taking the title from China. Two other record bodies — the World Record Association and OWR — have recognised it under their own wording, which is why you will see the record described three slightly different ways online. The Guinness one is the title to quote.
How much are tickets?
| Ticket | Weekday (Mon–Thu) | Weekend (Fri–Sun) |
|---|---|---|
| Adult, 1.4 m and over | 550,000 VND | 650,000 VND |
| Child, 1.0–1.4 m | 350,000 VND | 350,000 VND |
| Child under 1.0 m | Free | Free |
A bridge ticket also admits you to the wider Mộc Châu Island park, including the Chim Thần cave, the succulent garden, the koi pond and the flower gardens. Combo tickets covering the park's other rides are sold separately. These are the agent-published prices in force from 1 January 2025 and current as of November 2026; confirm on the day, because the resort changes them without much notice.
When is it open?
The bridge runs from 07:30 to 18:00 and the wider park from 07:00 to 22:00. Published hours vary slightly between the resort's own pages and its ticket agents, so treat the first hour and the last hour as uncertain and aim for the middle of the day — or, better, the first hour after opening, before the coaches arrive.
Where is it, and how far is it from Hanoi?
At Mường Sang, Mộc Châu, Sơn La province, about 10 km from the centre of Mộc Châu. From Hanoi it is roughly four hours by road on QL6 through Hòa Bình — a real drive, with a mountain pass in the middle, which is why Mộc Châu works as an overnight rather than a day trip.
| From | Approximate drive |
|---|---|
| Mộc Châu centre | 15–20 min |
| Hanoi | ~4 hrs |
| Mai Châu | ~1.5 hrs |
What is it like to walk?
Unnerving for the first twenty metres and then fine. The glass is clean enough that you can see straight down, the deck moves a little on the suspended section, and the cliff walkway feels solid by comparison. Shoe covers are compulsory and issued at the entrance.
Weather decides the experience. In clear weather you see across the valley; in the low cloud that sits on Mộc Châu through much of winter you see white, and the glass is the whole attraction rather than the view through it.
Who should think twice?
Anyone with a serious fear of heights, since there is no way to look away from the drop — the floor is the view. Small children are usually fine because they do not mind; it is the adults who stop in the middle. Flat shoes are sensible, the shoe covers are slippery on wet glass, and a skirt is a poor choice above a transparent floor.
What else is at Moc Chau Island?
The park around the bridge sells its own rides separately — an air slide, a zipline, a go-kart track, arcade and children's play areas — and has a bamboo restaurant, a rose garden, a cone-roofed house and a glamping site, Nebula, for up to 88 guests. Most groups spend two to three hours in total.
Is it worth the detour?
Yes, on the way to or from Mộc Châu's tea hills and plum valleys, and no as a day trip from Hanoi on its own. Eight hours of driving for twenty minutes on a bridge is a poor trade. Paired with a night in Mộc Châu, the Hang Táu "village with no electricity", the tea hills at Mộc Sương and the pine forest at Ban Áng, it earns its place in a two-day northwest loop.
Planning Moc Chau with us
Thinking about Mộc Châu as a stop between Hanoi and the northwest? Tell us your dates and we will say whether it fits the route — sales@worldmatetravel.com or WhatsApp +84 988 660 505.
