Wikipedia
Rütli or Grütli (; ) is a mountain meadow on Lake Lucerne, in the Seelisberg municipality of the Swiss canton of Uri. Here the oath of the Rütlischwur is said to have occurred, the legendary turning-point in the pursuit of independence. Every August 1, on the Swiss National Day, the oath is re-enacted to commemorate the forming of the Old Swiss Confederacy.
Der Rütli (or: Das Rütli, Rytly, or Rytli) was a German literary group, named after the famous Swiss meadow. It was founded on 9 December 1852 by members of the Tunnel über der Spree as "a kind of subsidiary tunnel" ("eine Art Nebentunnel" — Theodor Fontane) with a more intimate atmosphere, in contrast to the ceremonial and public nature of the larger group's activities. They met weekly at one another's homes. One major difference between meetings of the Tunnel and meetings of the Rütli was that members' wives were admitted, albeit only after the "work" of the gathering was completed.
The members can be divided into the founders, or Ur-Rütlionen, and the Späteren. At first, the anniversary of the group's founding was celebrated each 9 December, but as this conflicted somewhat with the Tunnel's Stiftungsfest on 3 December, the date was moved to 5 February.
The group entertained many guests like Berthold Auerbach, Friedrich von Bodenstedt, Eduard Devrient and others.
By 1892, only three members still attended meetings; on 5 January 1897 Fontane wrote to Lazarus that "the Rütli's current slumber is a blessing; for years it's been in a tragic way."