Tam Thanh Grotto
Tam Thanh Grotto is one of the most important religious centers in the North of Vietnam.
There is a famous Vietnamese traditional folksong that celebrates the beauty of Lang Son:
“Dong Dang co pho Ky Lua
Co nang To Thi co chua Tam Thanh ”
Which translates to:
“Dong Dang features Ky Lua Street
The lady known as To Thi and the Tam Thanh Temple.”
This saying is widely recognized across Vietnam, highlighting four of the most famous places in Lang Son province. While this phrase specifically mentions Tam Thanh Temple, it is often overlooked that there is not just a Tam Thanh Temple in Lang Son. In fact, the name also refers to a stunning grotto! Located in Tam Thanh Ward of Lang Son City, the Tam Thanh Grotto is one of the most renowned grottoes in northern Vietnam. The grotto's entrance, standing 8 meters high, is found to the west of Ky Lua Street, surrounded by thick groves and a stone staircase. Both the steps and a poem by the mandarin poet Ngo Thi Si are elegantly carved into the mountain side.Photo: Internet
The poet captured the beauty of Tam Thanh Grotto brilliantly. As the poem suggests, visitors can lose themselves in the gentle sound of water streams cascading over massive stone blocks. While Tam Thanh Grotto may not rival the grandeur of the caves found in Quang Ninh, it undoubtedly offers a serene escape for those seeking a refreshing experience or simply wishing to reflect on their adventurous journey through Vietnam.
Useful Information
- Location: Tam Thanh Grotto
- Best for: All visitors
- Entrance: Free
- Hours: Day time visit is recommended
- Distance to city center: 208.3km (129.4 mi)

The fortress of the Mac Dynasty
The Fortress of the Mac Dynasty is located in Tam Thanh district of Lang Son Province.

Mau Son Mountain
Only 30km away from the center of Lang Son City, Mau Son Mountain is located in Loc Binh District, Lang Son Province.