The three forest cantons (drei Waldstätten) is the collective term for the original founding cantons of the Old Swiss Confederacy in 1291, Uri, Schwyz and Unterwalden, all of them situated at Lake Lucerne, in German called Vierwaldstättersee "lake of the four forest cantons", referring to the three cantons just named, and to the Canton of Lucerne, the first canton to join the confederation (1332). 1550 illustration for the Sempacherbrief of 1393, one of the major alliance contracts of the Old Swiss Confederacy The Old Swiss Confederacy was the precursor of modern-day Switzerland. ... For broader historical context, see 1290s and 13th century. ... Uri is one of the 26 cantons of Switzerland. ... Schwyz (German Schwyz) is a canton in central Switzerland between Lake Lucerne in the south and Lake Zurich in the north. ... Unterwalden is the old name for what is now two cantons in central Switzerland, south of Lake Lucerne. ... Lake Lucerne (German: Vierwaldstättersee, lit. ... Lucerne (German Luzern) is a canton of Switzerland. ... Events November 7 - Lucerne joins the Swiss Confederation with Uri, Schwyz, and Unterwalden. ...