This River in Switzerland Is So Clean That Locals Use It To Swim Home The Aare in Switzerland, is no lazy river. It is the largest river entirely contained within the country. It flows through the heart of Switzerland’s de facto capital, Bern, and its 12th-century medieval old town, which is a UNESCO World Heritage site. Most cities use bikes, but in this one, swimming is the best way […] READ: This River in Switzerland Is So Clean That Locals Use It To Swim Home