Zwing Uri

Zwing Uri is the ruin of a medieval stronghold on the Flüeli hill just north of Amsteg, in the canton of Uri. It falls within the municipality of Silenen and is listed as a Swiss heritage site of national significance. The hill matters for two reasons: it overlooks the old approach to the Gotthard, and it is tied to the founding legend of the Swiss Confederation.

Where does the name come from?

The name appears in the White Book of Sarnen, written around 1470. The book says the bailiff Gessler had a tower raised on a knoll by the bridge and meant to call it "Twing Uren", roughly "Uri's yoke". In the Uri tradition, the building was among the first to fall in the great destruction of castles that marked the start of Swiss freedom. The 1570 Chronicon Helveticum dates that event to 1307.

There is a historiographic twist as well. Chronicles of the 16th to 18th centuries sometimes placed Zwing Uri in Altdorf. Later writers moved it back to the Flüeli above Amsteg.

What does archaeology say?

The real history of the hill is older than the legend. People used the spot as far back as the Bronze Age. In the early 13th century a defensive tower replaced the earlier dwelling. Between 1310 and 1320 a larger castle with a ring wall and moat was planned, but work stopped after about six weeks and the site was abandoned around 1320. So there was no Gessler here, and nothing was razed in 1307, because the castle was never finished.

The hill then stood empty for centuries. In 1868 a restaurant was built on it, using stone taken from the ruin. The Swiss Castle Association (Schweizerischer Burgenverein) bought the site in 1928 and secured the remains. Its board decided on a full restoration in 1977, and the work was carried out over six weeks in summer 1978.

What will you see?

Low wall sections of the tower and its surroundings, set against the wooded slope of the Reuss valley. This is an outdoor ruin for a short stop, with no interiors or exhibition. Its value lies in the setting: you stand where Swiss historians have long placed the first spark of the revolt against Habsburg rule.

How to plan a visit

Zwing Uri lies between Amsteg and Silenen, in the valley followed by the Gotthard road and railway. Pair it with other stops in Uri, such as Altdorf and its Tell monument. Late spring and summer are the best seasons, when the slope is free of snow and ice. Check current access conditions before you go.

Frequently asked questions

Was Zwing Uri really Gessler's castle? Not as the legend tells it. Archaeology points to a tower from the early 13th century and an unfinished expansion from 1310 to 1320. The Gessler story comes from the White Book of Sarnen, around 1470.

Who owns the ruin? The Swiss Castle Association (Schweizerischer Burgenverein), since 1928.

Is it a protected site? Yes, it is a cultural property of national significance.

Where exactly is it? On the Flüeli hill north of Amsteg, in the municipality of Silenen, canton of Uri (about 46.774 N, 8.670 E).