Ahorn von Trun, Historical maple tree in Trun, Switzerland

The maple of Trun is a sycamore maple standing next to Saint Anna Chapel on the Court of Honor, located above the train station of Trun in the Surselva region. The current tree grows at the same location where a much older tree once stood before it fell in 1870.

The original tree was the location where representatives gathered in 1424 to establish the Grey League, a key political alliance in Swiss history. This moment made the place a symbol for how that powerful alliance came into being.

The Court of Honor was laid out in 1701 and honours notable figures of the region with memorial plaques. The chapel of St. Anna beside the maple was built in 1704 over an earlier building mentioned around 1500. Until 1778 the league assemblies on St. George's Day began with a rest here and prayers in the chapel.

The tree stands on the main road above Trun station, beside the Chapel of St. Anna in the Court of Honor of the Grey League. The rootstock of the old maple, felled by a storm in 1870, is kept in the Landrichtersaal of the Museum Sursilvan in Trun.

The old maple's rootstock was moved in 1890 to the meeting hall of the Cuort house and can now be seen in the Landrichtersaal of the Museum Sursilvan in Trun. The present maple was planted on the same spot after the storm of 28 June 1870 felled the nearly 500-year-old tree.