Vietnam boasts some of the most incredible mountain trekking available. Sapa, an old French hill station in northwest Vietnam, is close to the Chinese border and serves as the gateway to the stunning scenery of the Hoang Lien Mountains (also known as the Tonkinese Alps). Situated in the Lao Cai province, Sapa is also one of the main market towns in the area. The Lao Cai province is home to the highest mountain in Indochina, the Fan Si Pan (or Fansipan). The mountain is 3,143 metres high and is dubbed “the Roof of Indochina”.