The river Aare has its origin east of Meiringen, then it flows through a narrow gorge called "Aare-Schlucht" that is an interesting tourist-attraction in Meiringen. Then it flows through Brienzer See, Interlaken and the Thuner See before it gets to Bern, where the river makes a slope around the old part of the city.
Here in Bern, just below the Bundeshaus you can take a bath in the river Aare.