Tersnaus was rebuilt in the 19th century.
The small village can be found on the right side of the valley, just above the “Valserstrasse”.
Tersnaus was hit by a fire on 18 July 1900. The burnt village area was then relocated, the streets were rearranged in a checkerboard style, and the formed plots were reassigned to the families. Even today, the settlement structure formed at that time is clearly recognizable.
The Olympic mountain biking champion and world champion 2016, Nino Schurter, grew up in Tersnaus.