Lạng Sơn is a province located in the northeastern region of Vietnam, bordering China. It is known for its stunning natural landscapes, including mountains, forests, and rivers. The province has a rich cultural heritage, influenced by various ethnic groups, particularly the Tày and Nùng people. The capital city of Lạng Sơn is also named Lạng Sơn, which serves as a key trade hub between Vietnam and China. The area is famous for its historical sites, such as the Tam Thanh Cave and the Nhi Thanh Cave, as well as its vibrant markets that showcase local products and crafts.