The Reussdelta is a nature reserve and recreation area stretching along the southern shore of Lake Uri, a section of Lake Lucerne, between the villages of Flüelen and Seedorf. The river delta is left to its natural dynamics and is lined with reed beds and has extensive shallow water zones. In addition to the natural protection areas, there are hiking and biking trails, bathing beaches and playgrounds.
The 11m high observation tower, Aussichtsturm Reussdelta, was designed by Gion A. Caminada and built by local craftsman and apprentices in 2012. It is composed of 48 silver fir trunks, grouped into four groups of 12 tree trunks, and its four observation baskets are accessible through a spiral staircase with 39 steps. The railing is made of willow rods woven around 20 vertical steel poles.