The Isles is one of the main rivers in Switzerland, with a length of 158 km. The Isles flowed from the Alps through the St. Gotthard Pass, from Uri State into Lake Lusen until it was discharged in Lusen City, then from Brook with the Limatt River to the Alle, and finally into the Rhine River through Germany into the North Sea. There are many bridges such as the Capel Covered Bridge on the Royce River, which connects the river that flows through the city of Lusen Lake. The scenery on the riverside is beautiful. There are famous buildings such as Jesuit churches and old town halls on both sides of the river.